查询词典 electron tube

Optimized calculation shows that, the comprehensive performance of the eddying tube is better than that of the smooth tube, and the comprehensive performance of the eddying tube with minor screw pitch and proper groove depth is excellent.

优化计算表明，旋流管换热系统的传热-阻力综合性能指标优于光滑管换热系统，旋流管的螺距、槽深对旋流管换热系统的传热、压降、功率消耗等影响很大，但是小螺距、适当槽深的旋流管的综合性能是优良的。

Cylinders with a full-length eductor tube, or what is sometimes called a full-length dip tube, have a tube that runs from the inlet of the cylinder valve to the bottom of the cylinder .

带有全长排放管，或者有时称为全长汲取管的钢瓶有一个从钢瓶入口一直伸到钢底部的管子。

MethodsFour stages are required in the whole process of ear reconstruction. Firstly, place an expander under the normal skin of the cervical part and effuse. Then form skin tube using the expanded flap. Thirdly, the skin tube is transposed to the postauricle area. At last, conduct ear reconstruction utilizing the skin tube.

手术分4期进行：Ⅰ期在颈下部正常皮肤处埋置扩张器，注水扩张；Ⅱ期取出扩张器，利用扩张皮瓣形成皮管；Ⅲ期皮管转移至耳后；Ⅳ期以皮管为供皮区，行外耳再造术。

Provide various specifications of the thermal conductivity of silica fabrics / films, films with silica gel hot heat Laminated Materials, CD-ROM Anti-slip silicone pad dedicated, transparent silicone tube, flame-retardant silicone casing, thermal conductivity soft gel tablets, high temperature resistant silicone sealed tube / article, TFT-LCD with buffer shading silicone membrane, eggbeater with silicone tube (core material: stainless steel), PCB hot silicone cushion gaskets, such as a few more than ten kinds of series, million kinds of silicone products specifications.

提供各种规格之导热硅胶布/片、发热片用硅胶热贴合材料、CD-ROM专用硅胶止滑垫、透明硅胶套管、阻燃硅胶套管、导热软质硅胶片、耐高温硅胶密封管/条、TFT-LCD用缓冲硅胶遮光膜、打蛋器用硅胶管、PCB热压硅胶缓冲垫片、等数十余种系列，万余种规格之硅胶产品。

Guan Shi Ming point of penetration the main body of a book for studying work is in progress to Mrs. tube poetic prose thorough understand and explain, deep spirit endoplasm of the poem heart ; At the same time,Take the entire tube family culture as the research object, Omni-directionally makes every effort the multi- angles to study theWujin tube family culture; For the thorough research culture prominent family, the Qing Dynasty culture and the prose creation provides a vivid document.

本文以管世铭为研究切入点，对管氏诗文作品及唐诗学成就进行深入解读，发掘出管氏文学作品之诗心、文心及背后所蕴涵之深邃精神内质；同时以整个管氏家族文化为研究对象，详细考证其家族中重要成员文学及学术成就，力求多角度全方位研究武进管氏家族文化，为深入研究文化望族、清代文化和诗文创作提供一个生动的个案。

Of or relating to o occurring in a tube such as e.g. the fallopian tube or eustachian tube .

管的，有关管的或发生在管内的，如输卵管或耳咽管。

Of, relating to, or occurring in a tube, such as the fallopian tube or the eustachian tube .

管的有关管的或发生在管内的，如输卵管或耳咽管

The raw data was processed by using axial, coronal and double oblique multi-planar reformation; Images obtained were graded in terms of quality with a 5-point scale(5=excellent, 4=good, 3=fair, 2=poor, and 1=nondiagnostic). In grading image quality at axial MPR, The radiologic specialists focused on the subarcuate fossa, tendon of tensor tympani, facial recess, vestibular aqueduct and pyramidal eminence, In grading image quality at coronal MPR, attention was given to the scute, crista transversa, fenestra cochleae, lateral malleal ligament and snake eyes signature of cranial nerve, In the grading of the image quality at double oblique MPR, the radiologic specialists concentrated on the malleus, incus, stirrup bone, upper bony semicircular and aquaeductus fallopii, and then to implement statistical analysis. In order to choose the minimum tube current values and the maximum pitch that can satisfy the diagnosis request, image quality of axial, coronal and double oblique reformation images was compared with different tube current groups. 15 ears of volunteers were used to test the validity with the scanning parameter. Subsequently noise, MTF and dose length product were measured by phantoms in different tube current and pitch, the parameters obtained were compared and taken into statistics analysis.

扫描模式使用临床常用的颞骨螺旋扫描方式：管电压120 kV，准直宽度20×0.6 mm，视野200 mm，重建矩阵512×512，旋转时间1 s/r，重建层厚0.6 mm，重建间隔0.3 mm，分别改变管电流(380、300、200、160、120和80 mA)和螺距(0.8、1.0和1.2)进行扫描和重建，然后对颞骨进行横断面、冠状面和双斜面多平面重组，于重组后的横断层面图像上选取弓形下窝、鼓膜张肌腱、面神经隐窝、前庭导水管和锥隆起5个解剖结构，冠状面重组图像上选取盾板、横嵴、蜗窗、面神经的蛇眼征和锤骨外侧韧带5个解剖结构，双斜面重组图像上选取锤骨、砧骨、镫骨、上骨半规管和面神经管5个解剖结构，在双盲的情况下由放射学专家分别对各管电流和螺距下扫描的重组图像进行评分，随后进行统计学处理，从中筛选出满足诊断要求的最低管电流值和最大的螺距，分别采用患者25例(15耳)用该管电流值和螺距验证其可行性；然后利用模体分别测试各管电流和螺距下的图像的空间分辨率、噪声及其剂量长度积，并对测试所得参数数值进行比较和统计学处理。

In the high-frequency full-power, long tube output should pay special attention to the cooling system is normal, because the full power output of the tube heating than half-power when the high heat four times, when the cooling system abnormalities and easily damaged when the tube

在高频全功率、长时间输出时应特别注意电子管的冷却系统是否正常，因为在全功率输出时的电子管发热量比半功率时的发热量高四倍，当冷却系统异常时及易损坏电子管

On tube trailers with liquefied compressed gases, gooseneck dip tubes are used, but the dip tube orientation is determined by the end of the tube trailer which is being accessed.

在装液化压缩气体的管道拖车上，使用鹅颈汲取管，但汲取管的方位由要接近的拖车的终端决定。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。