试验模态分析是识别机械结构系统固有特性的一种常用、有效的现代技术。
The test modal analysis is an effective means to identify the intrinsic attribute of a mechanical structure.
从流固耦合的角度，试验研究了透平机械密封间隙气流脉动的动态特性。
An experimental study is conducted of the dynamic characteristics of gas flow pulsation in a turbine machinery seal clearance from the viewpoint of fluid solid interaction.
本文通过焊接试验研究，从焊接工艺效果、机械强度、导电性能等方面证明了这种新型钎焊料的优异特性。
Through experiments in welding, the paper has proved its excellent properties from the effects of welding technology, mechanical strength to electric conductivity etc.
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