HPHT gradient temperature method is an effective technique to grow gem diamonds.
高压温度梯度法是一种有效的合成宝石级金刚石单晶的方法。
Large synthetic diamond was grown by temperature gradient method (TGM) under HPHT.
用高温高压温度梯度法作为实验手段来生长优质宝石级金刚石单晶。
The more efficient produce technology of gem-grade diamond is HPHT temperature difference method which was created by American ge Corporation.
宝石级金刚石的培育技术比较有效的方法是美国GE公司首创的hpht温差法。
The results in this paper can be practically used for pipe string design and operational parameter selection for HPHT deep well down hole operations.
本文研究的结果对于高温、高压深井井下作业管柱的合理设计和作业参数的合理选择等具有较大的实用价值。
In addition, balance weight of hoisting system and HPHT simulation wellbore all can be placed in the bottom, and improve the system of passive safety.
另外，起升配重及高温高压模拟井筒可全部置于设计的人工井底，提高了系统的被动安全性。
A mathematical model for calculating the additional load on casing because of temperature changing during testing and production operation in HPHT well is established.
建立了高温高压油气井测试、采油等作业中因井筒温度发生变化导致的套管附加载荷计算模型。
A mathematical model for calculating the additional load on casing because of temperature changing during testing and production operation in HPHT well is established.
建立了高温高压油气井测试、采油等作业中因井筒温度发生变化导致的套管附加载荷计算模型。
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