“天然砂岩试验”的概念、定义、翻译、参考文献-科学参考

单词	天然砂岩试验
释义	天然砂岩试验 Encyclopedia 工学射孔质量评价释 natural sandstone testing天然砂岩试验采用天然砂岩制成标准试验岩心，经干燥、抽真空、氯化钠溶液（或煤油）饱和后，将岩心固定在橡胶套筒内制成砂岩靶，在常温、一定的压力和介质的井筒中射孔，测量岩心的穿透深度、靶板的穿孔孔径，评价射孔器性能的测试。
随便看	expression of the relation expression of viscosity expression plasmid expression screening expressions of degree and scope in an official document expressions of names and official titles in an official document expression state of information need expression vector expression with words complementary to each other express item expressive expressive action expressiveness expressive sound montage expressivity express list express mail service express moving warehouse expressor Express self-delivery point express self-extraction cabinets of goods Express Service in the Countryside express shop express special electric-tricycle express warehouse overload

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。