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

单词	stratified random sampling
释义	stratified random sampling 分层任意抽样分层随机抽样分层随机取土样
随便看	self-locking nut self-locking steering gear self-lock mechanism self-lock pin self-lube bearing block self-lube cartridge unit self-lube flange cartridge unit self-lube four-bolt flange unit self-lube hanger unit self-lube pillow block unit self-lube take-up unit self-lube two-bolt flange unit self-lubricate self-lubricated self-lubricating self-lubricating bearing self lubricating block self-lubricating brush self-lubricating bush self-lubricating journal self-lubricating lower track roller self-lubricating material self-lubricating property self-lubricating pump self-lubricating sheave

科学参考收录了1248194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。