前槽缘 anterior trough margin
超前掏槽 advance cut
前海槽 fore-trough
山前地槽 piedmont geosyncline
前方地槽 frontal geosyncline
前倾槽 [气象] forward-tilting trough
上牙槽前支 [解剖] anterior superior alveolar branches
前地槽构造层 pre-geosynclinal structural beds
前地槽 pregeosynclinal stage
上牙槽前动脉 [解剖] anterior superior alveolar arteries
所述侧壁具有与所述前壁分隔并围绕所述栓横向地延伸的槽。
The sidewall has a groove that is spaced from the front wall and that extends transversely about the peg.
她笑了，然后走到洗涤槽前开始刷碗。
She smiled and then walked to the sink to start washing the dishes.
分析指出，该飑线系统是由高空槽前型的上干下湿引起的不稳定强对流天气。
The squall line is a kind of instable and strong convective weather caused by the air with upper-layer dry and lower-layer wet in front of the upper-troposphere trough.
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