首先最重要的一点：如果煤气管道内着火，应立即封闭所有入孔、放散管、采封管，并向管道内通大量蒸汽灭火。
First of all the most important point: if the gas pipeline inner fire, immediately closed all into the hole, radiation tube and sealing pipe, and in general to pipe of steam to extinguish fire.
通道单 元包括位于面对着第一通孔的位置处的凹入部分以及从该凹入部分的内表面突出的突出部分。
The passage unit comprises a concave portion located at a position facing the first through hole, and a protruding portion which protrudes from an inner surface of the concave portion.
介绍了一种加工孔内键槽的新方法和相应的专用工具。不但可用来加工通孔内的键槽，而且还能用来加工盲孔内的键槽或有障碍台肩的孔内键槽等。
The new method for machining keyway in holes and the special tool is presented, with which the keyway not only in blind holes but also in shoulder holes can be machined.
本文详细地讨论了考虑通孔自热的金属互连系统温度分布解析模型以及热点在通孔内形成的临界条件。
This paper presents an analytical thermal model considering via self-heating for estimating the temperature of metal wires and vias and the critical condition for hot spot formation within the vias.
图案化金属层位于绝缘层上并填入于导通孔中，以作为本实用新型多芯片封装结构的内连线层。
The pattern metal layer is arranged on the insulation layer and filled into the diversion holes, thereby being an inner linking layer of the multi-chip packaging structure of the utility model.
图案化金属层位于绝缘层上并填入于导通孔中，以作为本实用新型多芯片封装结构的内连线层。
The pattern metal layer is arranged on the insulation layer and filled into the diversion holes, thereby being an inner linking layer of the multi-chip packaging structure of the utility model.
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