bottomhole orientation孔: hole; opening; aperture底: bottom; base定向: directional; orient; orienta ...井底定向: bottomhole orientation孔底: bottom hole; face of hole; hole foe; toe of hole下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:孔底定向，即可在微信中查询翻译
