couple: n.1.一对,一双。2.配偶,夫妇,未婚夫妻,一对舞伴。3.〔口语〕交媾;【物理学】力偶;电偶;【天文学】联星。4.〔口语〕(少数)几个,两三个。短语和例子an old couple老两口儿。 a married couple夫妇。 a pack of 20 couple二十对的一群猎犬。 a thermo-electric couple温差电偶。 a couple of
Verification regulation of casing coupling meter 套管尺检定规程
2.
Casing coupling conneting with electric wire 电线连接套管
3.
Vertical motion of the carriage is provided by a pulldown gear case coupled by two pinions to racks on the mast 滑架的垂直移动是由一个下拉齿轮箱提供的,该下拉齿轮箱则通过两个小齿轮连接到支架上的齿条上。