查询词典 tubes

Therefore, the research of heat transfer performance in smooth tubes and internal grooved tubes has the certain theory value and the practical significance.

因此研究工质在光滑管和内螺纹管内的换热性能，具有一定的理论价值和实际意义。

A Lithium-Bromide absorption refrigerating machine is designed using inclined fin tubes as heat transfer elements for absorber and using other corresponding heat transfer enhancement elements for the other heat exchangers. Comparing with the machine of using bare tubes, this unit can save bronze by 19%, steel by 28%, space by 36%. And a lot of operating expenditure can be reduced at the same time.

用斜槽管作为吸收器中的传热管，并在其它传热部件中采用相应的强化传热元件，设计了一台溴化锂吸收式制冷机，与全部采用光管的机组相比，节省了19%的铜材、28%的钢材，整体体积减小了36%，同时还节省了其它费用，显示出较好的经济效益。

As traditional fluorescent tubes contain Mercury , and which is every harmful once any leakiness occurred , however, LED tubes do not contain any harmful materials, and will not cuase pollution to environment , so,the LED ligths is recognised as the green lighting products in 21st century .

传统日光灯中含有水银，泄漏会危害人体，而LED日光灯不含任何有害物质，对环境起到保护作用，被公认为二十一世纪的绿色照明产品。

Professional production of various specifications Super bright red, green, yellow, blue, white, pure green, and ultraviolet light-emitting diode, emission receiver tubes, light tubes, etc. Optical Products, and sales in Taiwan SMD Mounter II , transistor components series.

专业生产销售各种规格的超高亮红光、绿光、黄光、蓝光、白光、纯绿、紫外线发光二极管、发射接收管、光敏管等光电产品，并销售台湾产SMD贴片二、三极管元器件系列。

The LD II front-end (1K2) tubes were also microphonic adding to the perception of low quality compared to high end tube amps using easy to roll ubiquitous, but more expensive tubes.

小不点II前排胆管(1K2)存在麦克风效应，质量不够精良，不如其他价格更贵的胆管容易更换。

Pollen grains germinated soon after pollination. Pollen tubes grew first into the intercellular space of branched penniform stigma and then through the intercellular space of transmitting tissue into the top of the ovary, further penetrating the ovary wall and primine to the micropyle. Green fluorescence was found in both pollen and pollen tubes.

结果表明：授粉后，花粉随即萌发，花粉管进人羽毛状柱头分支结构的细胞间隙，继续生长于花柱至子房顶部的引导组织的细胞间隙中，而后进入子房，在子房壁与外珠被之间的缝隙中向珠孔方向生长，花粉与花粉管均具有明显的绿色荧光。

Based on the knowledge of the squash dynamic process of single steel tube and according to experiments concerned,the plastic behavior of multilaminate steel tubes subjected to radial impact is analysed,eight plastic hinges framework is established,the displacement and velocity fields of the steel tubes are described and the magnitufes of .

在单个钢管的动力压扁过程清楚的基础上，根据实验分析了多排钢管受径向冲击塑性行为，建立了八塑性铰机构，描述了钢管压扁位移速度场。

Furthermore, by using Natori theory on the field-effect transistor we study the current-voltage characteristics of deformed carbon nanotube field-effect transistors. For strain deformation, the conductivity of zigzag nanotube presents different characteristics with the remainder of n and 3. For armchair nanotubes, the conductivity does not change with the strain parameter. However, for torsion deformation, the conductivity rapidly increases, specially for the armchair tube. It has many obviously different conductivity behaviors between zigzag tubes and armchair tubes.

进一步应用场效应晶体管Natori理论模拟计算形变碳纳米管场效应晶体管的电流-电压特性的影响，zigzag碳管根据n 与3的余数关系表现出不同的电流变化趋势，而对于armchair碳管轴向拉伸不改变电流；在扭转形变时，碳管电流急剧升高，特别是armchair管。zigzag和armchair管的电流随扭转角度和外电压行为明显不同。

The first ten tubes and the eightieth to ninetieth oil tubes located at the portal of oil well should be the main part for testing, and their important testing regions were presented also.

得出了油井中应重，点检测靠近井口的1~10和80~90根油管，给出了油管上的重点检测部位。

Our main products are: PU pneumatic hose, PE air hose, PP hose, EVA hose pneumatic, POM tube, nylon tube Luo hose, PVC air hose, Noctiluca tube, TPR tube, heat-shrinkable tube, bar-lines, fiber tubes, Teflon tubes, and so on thirteen major categories of more than 1600 kinds Products.

公司主要产品有：PU气动软管、PE气动软管、PP软管、EVA气动软管、POM管、尼龙管罗软管、PVC气动软管、夜光管、TPR管、热缩管、扎线、纤维管、铁氟龙管等十三大类1600多种产品。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。