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- downhill adv. 下坡；向下；每况愈下
adj. 下坡的；容易的
- hoedown n. 活泼的土风舞；土风舞会
- letdown n. 失望；松弛；减低
- downhearted adj. 沮丧的;灰心丧气的
- buttonhole n. 钮扣孔
v. 强留...长谈；在...上开扣眼
downhole n. 井底，井内; adv. 向下打眼，，向下钻进;
downhole pump 井下泵
downhole operation [矿业] 井下作业
downhole burner 井下燃烧器
downhole camera 井下照相机
downhole drill 潜孔钻机
downhole flowmeter 井下流量计
downhole hanger 井下悬挂器
downhole pulser 井下脉冲发生器
downhole recorder 井下自动记录仪
网络短语:
downhole seismometry 井下测震
downhole electrodrill 孔底电钻
downhole junk 井下落物
downhole chamber 井底集聚室
downhole temperature 井下温度
downhole ignition 井底点火
downhole hhharticle 井下悬挂器
downhole motor-pump 电潜泵
downhole derricks 作业井架