standard sample
短语词组
- standard d sample 标准样品
- Make Standard Material Sample 材料样板
- standard wastewater sample 标准水样
- spectral standard -sample 光谱标准样品
- standard core sample 标准芯样
- standard cotton sample 标准棉样
- standard cluster sample survey 标准组群抽样法
- standard coal sample 标准煤样
- plant standard reference sample 植物样品 返回 standard sample