sieve aperture [粮食] 筛孔
sieve aperture adjuster 鱼鳞筛筛孔调节器
effective sieve aperture size [冶] 有效筛孔度
big aperture sieve-plate 大孔径筛板
Powders Products of which 90% or more by weight passes through a sieve having a mesh aperture of 1mm.
粉末按重量计90%及以上可从网眼孔径为1毫米的筛子通过的产品。
Products of which less than 90% by weight passes through a sieve with a mesh aperture of LMM and of which 90% or more by weight passes through a sieve with a mesh aperture of 5mm.
按重量计不到90%可从网眼孔径为1毫米的筛子通过，而90%及以上可从网眼孔径为5毫米的筛子通过的产品。
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