A simple and useful method for calculating the static roof pressure has also been disscussed.
提出了简单实用的顶板静压计算模型与方法。
The design method of damping spring in vibration hammer is developed in this paper. Espacially a selecting range is introduced for calculating damping parameter, which is useful in design.
介绍了振动锤隔振弹簧设计方法给出了隔振参数计算必要的取值范围，可供实际设计参考。
A useful method for calculating RCS of complex objects is given.
提出一种计算复杂目标高频区rcs的实用方法。
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