1.
cross-over seat
转换阀座钻屑天然气
2.
The Comment on Replacement from LPG to Natural Gas in Shenzhen;
深圳市液化石油气转换天然气的探讨
3.
The taper stem head then transfers a vertical closing force to a lateral force which positively seats the knife against the seat face.
然后锥形阀杆头将垂直关闭力转换成侧向力，将闸刀放置到阀座表面上。
4.
Industry Heating Facilities Adjustment while NG Conversion
向天然气转换时工业加热设备的调整
5.
The Transformation of Energy in the 21st Century and the Natural Gas Pipeline Industry;
21世纪能源的转换及天然气管道工业
6.
gas electric rig
天然气发电机 钻机
7.
Converting gas drilling to conventional drilling within short time
气体钻井快速转换为常规钻井的钻井液技术
8.
Treatment Technology of Pipeline Leakage after Conversion from Manufactured Gas to Natural Gas
人工煤气转换天然气后管道泄漏处理技术
9.
All valve seats and seat discs shall be replaceable.
所有阀门阀座和阀座阀瓣应该是可更换的。
10.
change over bridgecontrol room pilot air valve
驾驶室-控制室转换用控制空气阀
11.
As if in answer to his prayer, Wu Chih-sheng immediately changed the subject.
而居然“天从人愿”，吴芝生转换方向，叹一口气问道：
12.
Metering of Domestic Gas Meter in NG Conversion
天然气转换中居民用户计量的对策研究
13.
Research of Risk Source Analysis and Safety Control for Natural Gas Conversion;
天然气转换中危险源分析及安全控制的研究
14.
blowing the drip
打开集液器阀门让天然气喷放
15.
Experiment of Formate Drilling Fluid for Drilling in Marine Gas Hydrate Bearing Sediments
海底天然气水合物地层钻探甲酸盐钻井液实验
16.
Study on Silicate Drilling Fluid for Drilling in Marine Gas Hydrate Bearing Sediments
海洋天然气水合物钻井的硅酸盐钻井液研究
17.
A well or drilling that yields natural gas.
一种产天然气的井或钻井
18.
The Study of Natural Gas Hydrate Formation during Deepwater Drilling;
深水钻井中天然气水合物预测的研究