recipro wall cleaner
上下活动式井壁刮针
free parallel pump
平行管型活动式井下泵
free casing pump
套管型活动式井下泵
hydraulic expansion wall scraper
液压扩张的井壁刮刀
electrically driven rotary sidewall sampler
电动钻进式井壁取心器
Coal Mine Shaft Scraper Conveyer Electric Motor Loss by Burning Reason Analysis
煤矿井下刮板输送机电动机烧损原因分析
He scaled off the paint form the wall.
他把壁上的油漆刮掉了。
Damage form research of shaft sidewall under local load
局部荷载作用下立井井壁破坏形式研究
bottom-supported mobile rig
坐底式活动钻井装置
bottom-trip casing whipstock
井下移动式套管造斜器
mobile offshore drilling unit
海上移动式钻井平台
offshore mobile drilling units
海上移动式钻井装置
The Beijing city was sunny this morning but strong wind appeared in the afternoon. The change in weather forced most people that were originally in outdoor activities to move back to their homes.
北京城今天上午还风和日丽，下午却开始刮起狂风，把户外活动的人们纷纷驱赶回家。
Study on the Design and Kinematic Simulation of the Rotary Sidewall Coring Tool;
旋转式井壁取芯器的设计与机构运动仿真研究
movable boot scraper of iron or steel
钢或铁制活动的刮靴刀
continuous sidewall core cutter
连续式井壁岩心切割器
hookwall compression-set packer
井壁式压缩座封封隔器
gas generated press sidewall coring tool
产气压入式井壁取心器