小管道

基本解释 (translations)

ductule

与小管道相关的网络例句 [注：此内容来源于网络，仅供参考]

The main jobs of the paper are as follows, Multi-scale decomposition and reconstruction of wavelet transform is utilized to filter the noise of negative-pressure-wave, which is brought by leakage. With the capacity to detect the signal singularity quickly and accurately, wavelet transform was used to catch the break point of pressure signal. Accordingly, the work improved the location accuracy.

主要研究工作有：利用小波变换的多分辨率分解和重构技术，对采集到的管道泄漏产生的负压波信号进行消噪处理，并对几个影响消噪质量的关键因素及其选取方法进行了分析；再利用小波变换技术对信号奇异点的快速、准确的识别能力，对经消噪后的负压波信号进行奇异点捕捉，从而实现更精确的单条燃气管道泄漏定位。

This paper combines with pipeline delivery of our countrys actual conditions and other methods of detection and location. To the leakage characteristic of the fault to the long-distance natural gas pipeline, a method is raised, which is on the basis of wavelet and negative-pressure-wave to detect the leakage and locate. Jobs in this paper are as follows:Multi-resolution decomposition and reconstruction of wavelet transform is utilized to filter the noises, which the leakage brings the noises of negative-pressure-wave. The research is worked in the wavelet and wavelet packet filter. The wavelet transform have a fast and accurate recognition capability to signal singularity. This paper chooses wavelet technology to catch the break point of pressure signal.

本文结合我国管道输送的实际情况和目前现有的各种泄漏检测与定位方法，针对天然气长输管线泄漏故障的特点，提出了基于小波分析和负压波相结合的方法检测泄漏并定位，其中主要进行了以下几个方面的工作：利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行降噪处理，并对小波及小波包优化的降噪效果进行对比性研究；利用小波变换技术对信号奇异点的快速、准确的识别能力，捕捉负压波信号的突变点，从而判断是否有泄漏发生。

At the same time, combining with the actual condition of delivery pipeline of our country and some prevalent leak detection and location methods, this paper raised a method, which is based on wavelet analysis and negative- pressure-wave to detect and locate the leakage. Jobs in the paper are as follows:As affected by gas density, pressure, specific heat and pipe material, the velocity of negative-pressure-wave improved depending on the energy conservation. At one time, taking the affection of velocity of gas flow, the location formula was modified in some degree.When locating the leaks with location formula, the iterative approach algorithm was adopted as a new method to increase the location accuracy level of system.Multi-scale decomposition and reconstruction of wavelet transform is utilized to filter the noise of negative-pressure-wave, which was brought by leakage. With the capacity to detect the signal singularity fast and accurately, wavelet transform was used to catch the break point of pressure signal. The work improved the accuracy of At in location formula, accordingly improved the location accuracy.Wavelet is a suitable tool for signal analysis. The distinct character is that the mother-wavelet is of optional. That means choosing different mother-wavelet will get different analysis result. So we studied how to choose mother-wavelet and its scale for signal singularity detection. The method is to choose a wavelet by regularities of the wavelet and the signal.Finally, a plan, which bases on SCADA system for inspection and detection of natural gas leakage, is proposed in the article.

其中，主要进行了以下几方面的工作：针对泄漏产生的负压波在管道中的传播速度受媒介的密度、压力、比热及材质等因素的影响，而非声波在空气中传播的速度，本文利用能量守恒原理，对其进行了修正；考虑到管内气体流速对压力波速的影响，对原始的负压波定位公式进行了一定程度的改进，并在利用定位公式进行泄漏点定位时采用逐步迭代逼近算法，提高了系统的定位精度；利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行了降噪处理；并利用小波变换技术对信号奇异点的快速、准确的识别能力，对经上述消噪后的负压波信号进行了奇异点捕捉，精确捕捉的结果提高了定位公式中上下游站点采集到的负压波奇异点的时间差△t的精度，从而进一步提高了定位的精度；考虑到小波变换是一种基波可变的信号分析工具，也就是说，不同的小波基波对信号分析的结果将有很大差别，这势必影响最终的处理结果，因此，我们又对比分析了本课题中小波基及尺度的选择问题，依据规则性系数相似性原理对母小波的选择进行了探索性研究；最后，还提出了基于SCADA的泄漏检测与定位系统的软件开发构想及系统的嵌入方案。

Though several leak detecting methods are available, they are not ideal inapplication scope, including responses speed and accuracy of leak localization. In thisdissertation, according to the conditions of pipeline transportation in our country,research is carried out on crude oil transported pipelines leak detection and locationtheory and the study on its supervisory system is given.

本文结合我国管道输送的实际情况，针对原油管道泄漏检测技术及其运行监测系统进行了深入的研究，主要进行了以下几个方面的工作：将小波变换技术引入到负压波特征拐点的捕捉，利用连续小波变换时间-尺度特性检测信号的奇异点，能够有效的检测出强噪声背景下的信号边沿，此外，还提出了负压波法泄漏检测中误报警消除的多种方法。

The present invention includes guide shaft connected to universal shaft coupling; small box and large box clearance fitted with and fixed to the guide shaft; support rod with one end connected to the notched blocks inside the small box and large box and the other end connected to the roller and the sensor; and sensor fixed onto the installing frame and compression spring set inside the large box; and all these together with the pipe constitute one umbrella-shaped structure.

本发明导向轴与万向联轴节固定联接，小箱体、大箱体与导向轴是间隙配合，并在导向轴固定；支承杆一端联接于小箱体与大箱体中的凹形块，另一端与滚轮联接；传感器固定于传感器安装架上，压缩弹簧设置于大箱体中；支承杆一端与小箱体、大箱体中凹形块联接，另一端与滚轮、传感器安装架联接，支承杆沿半径方向圆周均匀分布，与小箱体、导向轴和管道组成一个伞式结构，支承杆与大箱体、导向轴和管道组成另一个伞式结构。

This was because its flow velocity changed little in direction than the other one. However, the Z-like tube was a little better than the U-like tube when without blowing.

结果表明：不吹气时，管道结构对流场的影响远小于气体吸热对流场的影响；吹气时，管道内气体流速较大，管道结构对流场分布的影响比较明显；吹气时，U形管道对光束的影响比Z形管道对光束的影响要小。

Service project 1, pipe clean-up: 22,819,364 (1) cleaning of septic tanks, oil-water separator tanks, sewage treatment and cleaning of pool building water tanks, cisterns, swimming pools (2) cleaning because of animal and plant oils, viscous materials such as manure, sludge and litter caused by blockage of the inflow of municipal pipelines II dredge pipeline:(1) municipal pipelines: available in large-scale machinery, a variety of director dredge Road, municipal sewer pipes and other large-scale (2) industrial pipe: Factory, Sheung Shui, pipelines, water pipelines, ship pipeline dredging, cleaning, repair services (3) bath basin: to clear the various models of bath, basin, vegetables pool, including the V-bends and S-type bends all kinds of pipe (4) toilet: dredge a result of rags, towels, cleaning ball, etc. burst into a variety of soft and hard goods caused by plugging the toilet (5) to leak: dredge a result of cement, sand, hair, cloth and other debris into the floor drain caused by the plug (6) Zun pit: pit long service life inside alkaline urine thickening, under the water, small, slow flow easily plug three.

服务项目一、管道清理：22819364(1)清理化粪池、油水分离池、污水处理池及清洗大楼水箱、蓄水池、游泳池(2)清洗因动植物油脂、粪便等粘稠物、淤泥和垃圾流入造成堵塞的市政管道二、管道疏通：(1)市政管道：备有大型机械，疏通各种主管道、市政管道及其他大型下水道(2)工业管道：工厂上水管道、下水管道、船舶管道的疏通、清洗、维修服务(3)浴缸面盆：疏通各种型号浴缸、面盆、菜池，包括V型弯和S型弯各种管道(4)马桶：疏通因抹布、毛巾、清洁球等各种软硬物品冲进马桶所造成的堵塞(5)地漏：疏通因水泥、沙子、头发、抹布等各种杂物掉入地漏所造成的堵塞(6)墫坑：蹲坑使用年限久了，里面尿碱变厚，下水量小、流速慢，极易堵塞三。

Wavelet packet decomposition can decompose high-frequency part of signal. In order to obtain the energy rate index of each node this paper advances apply wavelet packet decomposition method to node response of pipe. And then use statistics method to analysis the energy rate index indicator of various nodes in pipe. Results show this method not only can detect the locations of damage in pipe, but also can get a preliminary study for quantify the damage degree damage of pipe.

本文提出将小波包分解方法应用于管道的节点响应，得出各个节点的能量率指标，并利用数理统计方法对管道上各个节点的能量率进行统计分析，结果表示该法不仅能确定管道的损伤位置，而且还能对管道损伤程度的定量分析作一个初步的研究。

A creeping micro-pipe robot is designed,which comprises three DC motors and screw-driven units.

设计了一种蠕动式微小管道机器人，采用三组直流电机与螺旋传动装置，通过控制三组电机顺序协调动作，实现了机器人的蠕动前进。

Rainstorm formula for the calculation will be developed, For the statistical calculations to draw the process line of rainstorm; According to storm course line after the analysis of distributing the time course, based on the appropriate loss method of storm, the calculate formulation to urban surface runoff is attempted to calculate and get the urban surface net rain course line.

城市路面积水的产生和计算分析及对策利用水量物料衡算法对西安市长安路的纬一街至南二环段，小寨地区雨水管道的校核计算，得出当重现期为6年时，小寨地区的积水深度达到25cm；为了防止内涝，雨水管道须在原有的基础上需要增加400-1100mm管径才能较好的减少内涝。

与小管道相关的网络解释 [注：此内容来源于网络，仅供参考]

artery：动脉

1.动脉 动脉(artery)可分为大动脉、中动脉、小动脉和微动脉. 大动脉指的是主动脉及靠近心脏的大动脉分支、肺动脉主干及其发出的最大分支. 中动脉主要指从弹性贮器血管以后到分支为小动脉前的动脉管道,其功能是将血液输送至各器官组织,

canalisation,canalization：管道形成,管道泄液法

\\"小管,微管\\",\\"canaliculus,canaliculi\\" | \\"管道形成,管道泄液法\\",\\"canalisation,canalization\\" | \\"管道状血栓,管状性血栓\\",\\"canalized thrombus\\"

cuniculus,cuniculi：隧道,小管道

\\"楔状突\\",\\"cuneiform process\\" | \\"隧道,小管道\\",\\"cuniculus,cuniculi\\" | \\"顶,小杯\\",\\"cupola,cupulae\\"

raceway：电缆管道

rabbit 兔式速移器<铝或塑料制的小圆柱体 | raceway 电缆管道 | rack space 储存架区

seminiferous tubule：精小管

生精小管(seminiferous tubule)是一条细长的(成人直径150~250μm,长约30~70cm)管道,在小叶内高度蟠曲,是产生精子的场所. 每个小叶内的生精小管向纵隔方向汇集,与直精小管相连. 生精小管的上皮由特殊的生精上皮组成,上皮外有基膜.

tubulus rectus：直精小管

1.直精小管(tubulus rectus) 是生细精管末端变直的部分,管壁由单层柱状或立方上皮组成. 2.睾丸网(rete testis) 是睾丸纵隔内呈网状的上皮管道. 管壁由单层立方上皮组成. 管腔较大而不规则,腔内液体中含有大量游离的葡萄糖及少量乳酸,

uriniferous tubule：泌尿小管

肾实质由许多迂曲的泌尿小管(uriniferoUs tubule)构成,其间有血管和少量结缔组织. 泌尿小管包括肾单位和集合小管两部分. 肾单位起始部为膨大的小球,称肾小体,与肾小体相连的一条长而弯曲(30-40mm)的管道称肾小管. 根据结构和功能的不同,

Tubules：肾小管

同理,其他种类的糖、氨基酸,以及水溶性维他命的 ...运动会降低安静时胰岛素的浓度,而导致肾小管(tubules)对钠(盐)的回收率减少之 .... 人体的肝脏和肌肉有大量的肝醣,肝醣贮积症对这. 两种器官组织影响最大. ...便能够'脱手'制作管道滚压开槽.

small-diameter pipeline：小管道

管道防腐:Pipeline anti-corrosion | 小管道:small-diameter pipeline | 管道输送:Pipeline transport

machinegun：机枪

在进入一扇门后会得到第一件威力较强大的武器-机枪(Machinegun)向前走,会有几个弹夹,敌人马上就出现,用你新得到的武器给他们点厉害尝尝. 接着走,到一排通风管附近,出现一个大块头,把管道打破,消灭它,绕过管道,进入一扇门后会见到Badger小队长Miller,