查询词典 electron tube

On tube trailer s 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 progammable pipeline, especially nbspvacuum exhaust port hithermost a rubber tube was most likely to result in a flat suction nbspvacuum gas pipeline damage that prevents the rubber hose is an effective way of a flat is to install rubber tube a few root and pneumatic tube diameter equal to the springs.

晒版机惯路，尤其是真不满泵抽气口最挨近的一段橡胶惯最便当被真不满泵呼凹变成气路惯道毁坏，制止橡胶惯被呼凹的灵验方法是不兵橡胶惯边安设上几不梢与气路惯屈径不等的弹簧。

When the thickness of tube increase, the formability of the tube is better too, but the internal pressure for tube hydroforming is higher.

随着管材厚度的增加，管材的成形性能也会越好，但所需的成形压力也越高。

Methods use root tube drainage or toot tube treating after opening a window in apical labium,conservative treatment on apical cyst,use the root tube filling agent suitable filling.

采用根管引流或根尖部唇侧开窗引流后根管充填剂适当超填方法保守治疗根尖囊肿。

The conversion boundary of self-incompatibility was researched by sowing by stage. Sunshine of day and temperature was studied critically by investigating leafage and researching traits indoors. The results showed that the daily minimum temperature was the principal factor of affinity conversion and the affinity conversion boundary was 16.5~18.1℃.HE97 was primarily regard as self-incompatible line in this research. The method was by inbreeding and sib HE97, Half the silk of HE97 and Zheng58. Inbreeding and cross have been done simultaneously. The extending condition of pollen tube was observed by dying the silk after pollinating 4 hours. The individuals with pollen tube were observed having seeds, while the individuals without pollen tube were observed having few seeds or no seeds. So this study regard HE97 as sporophytic self-incompatibility .The planting ration of female parent HE97 and male parent 87-1 was 4:1.The nature cross-pollination was studied by the theory of endosperm xenity, the study show that the setting percentage of HE97 was 625%, in which the seed in self was 70% and the seed in hybrid was 30%. This was consistent with the study of silk anatomy structure, then come to the same conclusion: compatible pollen germination and fertilization can stimulate the self-incompatible pollen germination and fertilization in the same corn cob.

通过分期播种，进行了光温敏自交不亲和材料HE97亲和性转换区间的研究，依据田间跟踪调查叶龄及室内考种研究了HE97亲和性转换区间的光温临界值，结果表明：1日最低温度是影响HE97自交不亲和性的主要原因，亲和性转换区间在16.5℃～18.1℃之间。2通过HE97自交和姊妹交以及将HE97与郑58作为双亲，各自的花丝一分为二，分别正反交，授粉后4个小时分别取其花丝进行固定、染色，观察花粉管的伸长情况，根据结实率与花粉管伸长的对应关系，结果发现观察到花粉管的对应植株收获到了种子，而没有观察到花粉管的对应植株结实率极低或没有结实，本研究把HE97初步划为孢子体自交不亲和类型。3以HE97为母本，87-1为父本，按4母：1父行比，通过花粉直感效应研究天然异交率，结果母本HE97结实良好(62%)，其中自交粒占70%，异交粒占30%，结合花丝切片观察表明，亲和花粉的萌发及受精会导致落在同一果穗柱头上不亲和花粉的萌发不再受抑制。

Into each of the second set ("10") of three tubes pipet 1 mL from tube A, and into each tube of the third set ("1") pipet 1 mL from tube B.

向第2组（标记"10"）3支试管的每一支中，移取1mL来自试管A的液体，并向第3组（标记"1"）3支试管的每一支中，移取1mL来自试管B的液体。

Working principle: Jet pumps work only two basic components: a rotation of the rotor and a fixed receiver tube (also known as fluid collection tube, Pitot tube).

工作原理：旋喷泵内只有两个基本工作部件：一个旋转的转子和一个固定的接收管。

If your new tube lacks the grounding strap, pull it off the old tube and screw it in place on the replacement tube.

如果您的新管没有这根接地的金属带，一定要用这根旧管子上的金属带并安装在新管子上。

By using Whitham rule, this paper analyzes the characteristics of pressure and temperature of the oscillating gas in the conical resonance tube theoretically and explains why the conical resonance tube can reach higher temperatures than the cylindrical resonance tube.

文中利用Whitham规则，从理论上分析了在圆锥形管中振荡气体的压强和温度特性。

Because the conical resonance tube can enhance shock waves, the gas at the end of the conical resonance tube has higher pressure oscillation amplitudes and higher temperatures and heating rates than that at the end of the cylindrical resonance tube.

因为圆锥形谐振管对激波有增强作用，所以在相同条件下，圆锥形谐振管中气体压强的振荡幅度和加热温度、速度都要高于圆柱形谐振管，因而圆锥形谐振管加热性能比圆柱形谐振管好。

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。