引起水电机组振动的原因复杂，目前主要是通过转速试验、负荷试验和励磁试验等试验手段来判别机组的振动故障。
Due to complexity of hydroelectric units vibration reasons, vibration fault is distinguished mainly by means of rotate speed experiment, load experiment and excitation experiment et al at present.
目的研究手传振动作业工人手部温度分布及其冷水负荷试验的影响。
Objective To study the distribution of hand skin temperature before and after cold water test between vibration exposed workers and their non exposed control ones.
本文就大直径重负荷砂轮高速回转试验机设计过程中出现的振动问题，从理论上对多种影响整机刚性的不稳定因素进行了分析研究；
This paper presents an analysis and study on the vibration and unstable factors which affects the stiffness of the speed Tester for high speed heavy load large grinding wheels;
本文就大直径重负荷砂轮高速回转试验机设计过程中出现的振动问题，从理论上对多种影响整机刚性的不稳定因素进行了分析研究；
This paper presents an analysis and study on the vibration and unstable factors which affects the stiffness of the speed Tester for high speed heavy load large grinding wheels;
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