管的

Step 1: Center the secondary mirror on the axis of the focuser drawtube.

把副镜中央置于调焦伸缩的中轴。

It should be realised that ovalisation of the 22mm outer diameter pipes was minimal and difficult to measure.

显然，22毫米外径的成椭圆形是最小的且难以测量。

There is some green caliduct, and also some coals left over from last winter.

这里有绿色的暖气，也有上冬天没烧完的蜂窝煤。

344-359) describes a micrometer in which a negative lens is introduced between the eye-piece and the objectglass.

双重图象测微表与开的透镜。各种各样的测微表被发明了除heliometer 以外为测量由重象。Ramsdens 屈光的测微表包括开的透镜被安置在台地球望远镜的架设的眼睛的最内在的透镜的共轭焦点。

It has conquered the old method in machining the pipe of bus frame, which depend on aptotic mould formerly.

克服了依靠固定模具仿形加工车辆骨架弧度方法的缺点。

The phase shift theory and transmission line model of inertance tube in the Stirling type pulse tube cooler were introduced.

介绍了斯特林型脉冷机中惯性调相的原理和惯性的传输线理论模型，给出了惯性尺寸的优化计算方法。

Now simply close the wire lock and you have a very durable, totally weedless tube bait.

现在关闭导线锁，并且你有非常耐久，完全无杂草的诱饵。

Objective To investigate the mechanism of ulnar nerve anterior submuscular transposition in the treatment of cubit tunnel syndrome.

目的为肘征的治疗提供术式设计的解剖学依据。

To describe the clinical applycation of domelike decompression of the lumbar vertebral canal and evaluate the outcomes.

介绍穹顶形开窗减压术治疗腰椎狭窄症的临床应用,并进行临床疗效评估及生物力学研究。

During the experimental test of the VDCS, high frequency interference, MOSFET protection and predrive circuit design were the key issues.

在多功能驱动电路系统实验调试中，重点讨论了高频干扰问题、MOS的高压保护和预驱动电路设计。

At last, heat economy features of in-and-out dirt thermoresistance of air-cooling condenser heat sink pipe were calculated by programming.

最后,编程计算析了空冷凝汽器散热器内外污垢热阻的热经济性特性。

The paper presents a design of passive heat-switch between pressure tube and calandria tube of Thorium-based Advanced Nuclear Energy System.

提出了种用于钍基先进核能系统压力与排之间的非能动热开关设计方案。

The mainstructure parameters of spirally grooved tube are diameter of tube, fin pitch,corrugation depth, wall thickness, spirally angle and spira.

螺旋槽(亦称螺纹)是其中的重要支,它是种优良的高效异形强化传热件。

The tests research of blasting vibration simulating earthquake were carried out by a reinforced concrete pipe embedded landscape orientation and hangfire.

摘要通过埋置钢筋混凝土约束爆破的竖向震动，采用延时爆破方式进行模拟天然地震的试验研究。

Automatic frequency control (AFC) system is used to adjust the frequency of microwave power source to match the inherent frequency of acceleratory tube.

自动频率控(AFC)系统用于调节微波功率源输出的微波频率,使之与加速的固有谐振频率匹配。

Automatic frequency control (AFC) system is used to adjust the frequency of microwave power source to match the inherent frequency of acceleratory tube.

自动频率控(AFC)系统用于调节微波功率源输出的微波频率,使之与加速的固有谐振频率匹配。

The voltages that should be applied to each dynode are a function of PMT design and are specified for each tube type.

加到每光电倍增电极上的电压决定于PMT的设计，并由每子的型号来确定。

The external inspirator is available to drive the resonator to produce traveling wave.Under resonant frequency the distortion of resonator reached a peak.

外激励的驱动方式可以使扁环型谐振产生有效的行波量，在谐振频率下，谐振腔的变形量最大。

Tum on or turn off the pipelines where the nominal pressure is less than 1.0MPa and the media mustbe watter steam.water oroll.

用途 Usage： 本阀广泛用于石油、化工、药、电力等行业、在公称压力≤1.0MPa的蒸汽、水、油类、煤气介质的路上作启闭用。

The luminometer accepts samples in 12 mm diameter test tubes with lengths ranging from 45 to 100 mm and 15 mL microcentrifuge tubes.

光度计使用45～100纳米的波长范围，可兼容12毫米直径的测试和15毫升的微量离心。