double bevelled oil control ring

coil spring loaded slotted oil control ring

螺旋弹簧加载双坡口油环

semi-auto matic cutting the double groves

半自动气割双面坡口

dual tubing wellhead

双油管采气井口装置

diglycidyl rthers of bisphenol-A

双酚A二环氧甘油醚

The Stability Analysis of the In-Outflow Slope of Shuangjiangkou Hydroelectric Power Station;

双江口水电站进出水口边坡稳定性分析

Safety monitoring on high slope of on-site road of Shuangjiangkou Hydropower Project

双江口水电站工程场内道路高边坡安全监测

One side welding thermal cycle measuring experiment of heavy plate with V-shape groove

特厚钢板V型坡口单面焊接热循环测定实验

Comparison Between Single-ring Type and Double-ring Type Sealing Oil System of Generator

发电机单流环式和双流环式密封油系统比较

Double negative medium composed from two split ring resonators

一种双开口谐振环结构的新型双负介质

Oil control ring gap to be located 30 degrees to the left of combustion chamber recess.

控油环间隙位于燃烧室凹口的左30 度。

Original Environment of Eogene Petroleum Source Rocks in the Pearl River Mouth Basin

珠江口盆地早第三纪油源岩形成环境

Research on Exploration and Estimation Technologies for Subtle Reservoir in Slope of Qikou Sag;

歧口凹陷斜坡区隐蔽油气藏勘探与预测技术研究

Differences of structure and hydrocarbon accumulation characteristics of Middle Triassic Leikoupo Formation between Moxi structure and Longnvsi structure in Central Sichuan,China

川中磨溪与龙女寺雷口坡组构造特征及油气成藏差异性

Study on petroleum geological conditions and hydrocarbon exploration direction of Leikoupo Formation in the centre and west of Sichuan Basin,China

四川盆地中西部雷口坡组油气地质条件及勘探方向探讨

A discussion on the complex hydrocarbon transport system in the north slope of Baiyun sag-Panyu low uplift,Pearl River Mouth basin

珠江口盆地白云凹陷北坡—番禺低隆起油气复合输导体系探讨

This method surmounts the intrinsic shortcomings of one-dimensional experiment of vertical infiltration determining soil infiltration on slopes, and provides a convenient means for studying water interaction in slope land.

此方法克服了双环法测定坡地土壤入渗速率的固有缺陷，为研究坡地水量转化提供了便利手段。

Start-up Debug and Common Problem Treatment of Double-ring Type Sealing Oil System

双流环密封油系统启动调试及常见问题处理

EGR Control Strategy of Electronically Controlled Diesel Engine based on Dual Close Loop

基于双闭环的电控柴油机EGR系统控制研究