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

把副镜中央置于调焦伸缩管中轴。

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

显然，22毫米外径管成椭圆形是最小且难以测量。

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

这里有绿色暖气管，也有上个冬天没蜂窝煤。

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

双重图象测微表与分开透镜。各种各样测微表被发明了除heliometer 以外为测量由重象。Ramsdens 屈光测微表包括一个分开透镜被安置在一台地球望远镜架设眼睛管最内在透镜共轭焦点。

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管方法缺点。

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

介绍了斯特林型脉管冷机中惯性管调相原理和惯性管传输线理论模型，给出了惯性管尺寸优化计算方法。

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

现在关闭导线锁，并且你有一个非常耐久，全无杂草管诱饵。

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

目为肘管综合征治疗提供术式设计解剖学依据。

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管狭窄症临床应用,并进行临床疗及生物力学研究。

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管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,编程计算分析了空冷凝汽器散热器管内外污垢热阻热经济性特性。

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

提出了一种用于钍基先进核能系统压力管与排管之间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.

螺旋槽管(亦称螺纹管)是其中一个重要分支,它是一种优良高异形强化传热管件。

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管约束爆破竖向震动，采用延时爆破方式进行模拟天然地震试验研究。

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微波频率,使之与加速管固有谐振频率匹配。

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微波频率,使之与加速管固有谐振频率匹配。

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

加到每个光电倍增管电极上电压决定于PMT设计，并由每个管子型号来确定。

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

外激励驱动方式可以使扁环型谐振管产生有行波分量，在谐振频率下，谐振管腔综合变形量最大。

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蒸汽、水、油类、煤气介质管路上作启闭用。

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纳米波长范围，可兼容12毫米直径测试管和15毫升微量离心管。