nodding donkeys 读音:美英 nodding donkeys基本解释 点头驴子 分词解释 nodding点头的,低垂的,昏昏欲睡的v. 点头( nod的现在分词 ) donkeys驴( donkey的名词复数 )
【石油磕头机 (nodding donkey)的工作原理】视频中机械装置大家肯定在现场或者视频书籍中看到过。很多人一直不知道这是干什么用的。其实这是开采石油的一种机械设备,是油田广泛应用的传统抽油设备,用来带动地下深井泵,将原油由地下输送到地上。磕头机由驴头、游梁、支架以及曲柄组成。其动力通常由交流异步电机带动,电机...
Twitter Google Share on Facebook nodding donkey Wikipedia n (Mining & Quarrying)informal(in the oil industry) a type of reciprocating pump used to extract oil from an inland well [C20: so called from its shape and movement] Collins English Dictionary – Complete and Unabridged, 12th Edition ...
必应词典为您提供nodding-donkey的释义,网络释义: 点头驴子;点头的驴子;
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爱给网提供海量的英国街景照片库 (cc协议)资源素材免费下载, 本次作品为jpg 格式的Kimmeridge湾的“点头驴”(The "Nodding Donkey" at Kimmeridge Bay), 本站编号49552341, 该英国街景照片库 (cc协议)素材大小为240k, 分辨率为1024 x 664, 许可范围为可商用,署名,协议名称为CC署名-相同方式共享2.0, 作者为To...
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The Nodding Donkey dated his birth from the day he received the beautiful coat of varnish in the workshop of Santa Claus at the North Pole. Before that he was just some pieces of wood, glued together. His head was not glued on, however, but was fastened in such a manner that with th...
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When it comes to the oil industry, one term that often piques interest is "nodding donkey oil." This unique product has gained popularity in recent years, thanks to its diverse applications and benefits. In this article, we will delve into the world of nodding donkey oil, focusing on China...