One of the key technique problems is boundary dynamic contact constraint and contact judgment in FEA simulation for 3d complicated massive forming.
边界界面动态接触约束与接触判断是3维复杂体积成形有限元数值模拟的关键技术问题之一。
Another qualitative technique is the judgment made by comparison of one subject in the collection to a similar subject in another library, or to a subject bibliography.
另一个定质的方法是跟另一个图书馆在馆藏内的学科中,比较相似的主题后所得到评价,或是跟一个主题书目来做比较。
The levels of application and judgment of fully automatic ultrasonic detecting technique were further improved to strictly control welding quality.
提高全自动超声波检测技术的应用和判别水平,严格控制焊接质量;
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