concave perforated plate 凹形多孔板...fully-perforated tape 全穿孔纸带...staggered perforated plate 错列式多孔板...perforated-plate distributor 多孔板分布器...perforated chaplet 有孔砂心撑...perforated card 穿孔卡...tip-lift type perforated plate 活动顶盖式多孔塔盘...perforated stopper 穿孔塞子...perforated-plate column 多层孔板蒸馏塔...perforated screen 多孔板筛...perforated cylinder 多孔转鼓...perforated-pipe distributor 多孔管分布器...perforated plate tower 孔板塔...perforated-plate distillation column 孔板蒸馏塔...perforated-plate extractor 多孔板萃取塔...dished perforated plate 碟形多孔板...perforated plate column 孔板塔;多层孔板蒸馏塔...perforated paper tape 穿孔纸带...posterior perforated space 后穿质...perforated tape 穿孔带...perforated baffle 多孔挡板...
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