“two-step sampling”概念、定义、翻译-科学时代

单词	two-step sampling
释义	测绘学词汇手册 two-step sampling 二阶抽样
随便看	Secchi disk secco SEC coding SEC coding--SEC coding (single-error-correcting coding) SEC coding (single-error-correcting coding) secession secession secessionism Secessionists Secession Movement sec-hexyl acetate sechium sechium edule seckel seclusion seclusion seclusive personality SEC medium secobarbital sec-octyl phenol second second second second accent Second Advent of Christ，the

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。