“double random sampling”的概念、定义、翻译、参考文献-科学参考

单词	double random sampling
释义	double random sampling Encyclopedia 农学双重随机抽样法释 double random sampling双重随机抽样法若调查重要性状y不易观察测定，甚至要破坏后才能测定，而试验又不容许将材料过多破坏，则可利用与调查重要性状密切相关便于测定的辅助性状x进行间接的抽样调查，按确定的相关关系从x的调查结果推算y的结果的方法。又称相关抽样法、复式抽样法、两相抽样法、双重抽样。
随便看	hydraulic engineering construction hydraulic engineering construction machinery hydraulic engineering investigation hydraulic engineering site quality and safety and environmental management hydraulic equilibrium hydraulic excavator hydraulic expansion packer hydraulic external cutting operations Hydraulic facilities of The Beijing-hangzhou Grand Canal in Shandong hydraulic forging press hydraulic fractures hydraulic fracturing hydraulic fracturing method hydraulic fuse hydraulic gradient hydraulic hammer hydraulic handling hydraulic inside cutting operations hydraulicity hydraulic jet blow steerable drilling tool hydraulic jump hydraulic jump energy dissipator hydraulic lift hydraulic-lift hydraulic logical control module

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。