“骨架砂”的概念、定义、翻译、参考文献-科学参考

单词	骨架砂
释义	骨架砂 Encyclopedia 工学地层出砂释 friable sands骨架砂油井生产一段时间后，由于岩石骨架破碎而产生的地层砂。
随便看	positive definite scalar product positive definite sequence positive definite solution positive definite space positive definite tensor positive definte rational fanction positive deviation positive diffeomorphism positive diffeomorphisms positive differential positive direction positive displacement compressor positive displacement flowmeter positive displacement motor drill positive displacement pump positive displacement sensor positive distinctiveness positive distribution positive divisor positive divisorial ideal positive domain positive drawing positive drive lift positive dromotropic action positive edge

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。