A new stress element near a hole which satisfies both the stress boundary conditions at the hole and at the surface of the laminate and stress continuity condition at the interface is developed.
构造了一个满足孔边应力边界条件、层间应力连续条件以及层合板表面应力边界条件的孔边应力单元。
That main panel needed to look dimensional, so the laminate surface sheet was mounted to a pan-formed sign, made from a sheet of 4x 10white. 040 aluminum pre-painted sheet.
如果要使主面板看起来有立体感，就要把成形的字母安装在层压板表面，该层压板是由4英尺x10英尺的白色。040铝质薄板做成的。
The plating copper is a key process in the production of PCB, which involves the quality assurance of metallization of PTH holes and laminate surface, and is affected by a number of factors.
电镀铜是PCB加工过程中的一个关键工艺流程，涉及到孔和板面金属化的性能保证，影响因素众多。
The plating copper is a key process in the production of PCB, which involves the quality assurance of metallization of PTH holes and laminate surface, and is affected by a number of factors.
电镀铜是PCB加工过程中的一个关键工艺流程，涉及到孔和板面金属化的性能保证，影响因素众多。
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