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Terms for subject Environment containing | all forms
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畸胎发生teratogenesis screening
法, 用一个减少的尺寸标准的筛使得固体颗粒按大小分布,表示成为一个重量百分比sieving The size distribution of solid particles on a series of standard sieves of decreasing size, expressed as a weight percent
选骨材aggregate extraction Extraction of crushed rock or gravel screened to sizes for use in road surfaces, concretes, or bituminous mixes (对用于马路表面、混凝土或沥青混合物的碎石或沙砾的大小进行筛选。)
篦子铁栅bar screen