roto wall cleaner

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