比较了单自由度线性机械系统在稳态振动、随机振动、运输试验（汽车与火车）以及冲击试验中响应的大小。
This Paper Compared the responses for a Single-of-freedom linear mechanical System to stationary Vibration, random Vibration, transport (motor Uehicle and freight train) Shock testings.
着重研究了机械冲击和应力对无铅BGA封装焊点可靠性的影响，介绍了BGA 封装的可靠性力学试验（跌落、弯曲试验）及其分析方法。
The methodologies for free drop test and bending test are introduced, considering the important effect of mechanical stress on the reliability of lead-free BGA packaging.
连接副机械性能检测，采用微机控制的拉力机、冲击试验机及各种硬度计以保证测试精度。
Bolting mechanical properties are tested by the tensile strength tester, impact tester and hardness testers, to guarantee the detect precision.
试验研究了石油机械铸锻件常用低合金钢的显微组织结构对低温冲击韧性的影响。
An experimental investigation was made on the effect of the microstructure on the low-temperature toughness of the conventional low alloy steel used for petroleum machinery castings and forgings.
试验研究了石油机械铸锻件常用低合金钢的显微组织结构对低温冲击韧性的影响。
An experimental investigation was made on the effect of the microstructure on the low-temperature toughness of the conventional low alloy steel used for petroleum machinery castings and forgings.
应用推荐