1) preset bit load
预定钻压
2) fixed-pressure pretension
定压预紧
1.
Under the condition of fixed-pressure pretension,rotating speed has little effect on the radial stiffness of bearing,however,the axial stiffness and angular stiffness were decreased significantly with the increase of the rotating speed.
分析结果表明,定位预紧下轴承的径向刚度随转速的增大而增大,而轴向刚度和角刚度随转速的增大,先增大后减小;定压预紧下,轴承径向刚度受转速影响较小,而轴向刚度和角刚度随转速增大急剧下降。
3) drilling with compressive pre stress
预压应力钻削
1.
After the various visual defects during drilling processes were analyzed, the importance of drilling with compressive pre stress was presented.
根据复合构件加工中的各种缺陷,分析了采用预压应力钻削对改善表面加工质量的重要性。
4) pre-drilling pressure meter test
预钻式旁压试验
1.
This paper briefly introduce the principle of pre-drilling pressure meter test,the analysis of engineering main influent fantors.
简要介绍了预钻式旁压试验工作原理,对工程程中常见的几种主要影响因素进行分析研究并提出有效的控制,以提高试验结果准确性,为基础设计提供合理准确的设计参数。
5) pre-drilling pressure prediction
钻前压力预测
1.
Only through accurate pre-drilling pressure prediction and carefully geologic study, the drilling safety can be assured.
只有准确地搞好钻前压力预测,搞好油气地质研究,才能确保钻井的安全。
6) pre-shaping autoclave
预定形压力装置
补充资料：洗削
1.革除。 2.磨刀。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条