base sealing 底部密封胶
Sphere sealing base 球密封座
damage of sealing base 密封座损坏
dam base sealing up 大坝基础防渗处理
Oil Base Sealing Fluid 油基密闭液
A sound hole is formed in the covering part or the sealing base so as to allow the internal space to be communicated with the external space.
音孔形成在覆盖件中或者封装基座中以便允许封装的内部空间与外部空间相通。
Heat sealing: a method of uniting two or more surfaces by fusion either of the coatings or of the base materials under control led conditions of temperature pressure and dwell time.
热封：把两层或多层表面融合为一的方法。它是把涂层或基层材料在固定的温度、压力和接触时间下进行。
In order to acquire a good hermetic seal between the diaphragm and the base plate, two sealing methods were used, namely, compound method and crystallite method.
研究了复合法和结晶法两种封接方式，使陶瓷基座与膜片达到良好的匹配封接。
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