The fracture of piston rod of new hydrogen compression pump is studied by metallography and electron probe in this paper.

用金相显微镜和电子探针对新氢压缩机活塞杆断口进行了分析。

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One end of a probe telescopic rod is provided with an ultrasonic sensor, a flow velocity determinator, a pressure sensor and a vacuum piston water sample collector.

探头伸缩杆一端安有超声波传感器、流速测定仪、压力传感器和真空活塞水样采集器。

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A method was proposed to correct errors in water flow field measurements with 5 hole probe because of rod bending caused by flow drag. The convergence of the computing method was analyzed.

提出挠流阻力引起探针杆挠曲造成水流场测量误差的迭代计算修正方法，分析该方法的收敛性及收敛方式。

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