vent-hole

基本解釋

This preparation includes: 1) Vent hole in ball 2) Flow directional arrow 3) Cleaned and bagged to prevent contamination.
包括：1)球內(nèi)通氣孔；2)流向箭頭；3)經(jīng)過(guò)清洗并采用能夠防止污染的包裝。
Taking the self-design simplified arc chamber model as the research target, the displacement and moving speed of arc under different external magnetic field and vent hole is analyzed.
以自制簡(jiǎn)化滅弧裝置為研究對(duì)象，分析了不同外加磁場(chǎng)和不同出氣孔時(shí)電弧的運(yùn)動(dòng)情況。
Placement of vent holes are 1” in from the side and 1” up from the bottom of the bag.
排氣孔的位置分別是橫面1英寸，從袋子頂端到袋子底端也是1英寸。
The jet flows from vent holes in a center-core igniter strongly influence the process of ignition in guns.
中心點(diǎn)火管傳火孔射流場(chǎng)直接影響火炮膛內(nèi)的點(diǎn)火傳火過(guò)程。
His strength in a crisis is an ace in the hole.
臨危不懼是他的看家本領(lǐng)。