请问“oil drain bedplate vertical”怎么翻译,

请问：电学中drain current怎么翻译? 怎么翻译 vertical organize cross-vertical中文怎么翻译 before drain the oil,place the oil drain pan under the drain Vertical Limit 歌词翻译 翻译《drain you》,nirvana 的. 建筑翻译高手请进:open drain;cover drain;open drain with grating cove 请问下：No drain pan is needed. vertical intention 民航术语,如何翻译? fish oil怎么吃 massage oil怎么用 跪求circle the drain的歌词翻译