查询词典 optional selection

punched card machine：打卡机

punched card for visual selection 目选穿孔卡 | punched card machine 打卡机 | punched card method 卡片穿孔法

pure line theory：纯系学说

pure line selection 纯系选择 | pure line theory 纯系学说 | pure linen grey cloth 纯亚麻坯布

pure line isolation：纯系隔离

纯系育种 pure line breeding | 纯系隔离 pure line isolation | 纯系选择;纯系选拔 pure line selection

purebred animal：纯种家畜

pure stand 纯林 | purebred animal 纯种家畜 | pureline selection 纯系选择

purgative：轻泻药

pureline selection 纯系选择 | purgative 轻泻药 | purification 精制

Purposive selection：立意选择

Purposive sampling 立意抽样 | Purposive selection 立意选择 | Purchased materials inspection 购(入材)料检验

Purposive selection：立意选取

立意抽样 purposive sampling | 立意选取 purposive selection | 推定误差 putative error

push button selection：按钮选择

岸砂 shore sand | 按钮选择 push button selection | 胺基甲酸乙脂 urgthane

push-up：模面挤凹(铸疵)

按钮选择 push button selection | 模面挤凹(铸疵) push-up | 高温冶金学 pyrometallurgy

putative error：推定误差

立意抽样 purposive sampling | 立意选取 purposive selection | 推定误差 putative error

phenol red：酚红,苯酚磺酞

phenol reagent 酚试剂 | phenol red 酚红,苯酚磺酞 | phenol red test 酚红排泌试验

accessory equipment：附件

accessory equipment 辅助设备 | accessory equipment 附件 | accessory part 附件