The flame retardant and smoke suppression effect of serial metal hydroxystannates on semi - rigid PVC was studied.

研究了系列羟基锡酸盐阻燃剂 对半 硬质PVC的阻燃消烟作用.

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By contrast, inoculation of BSA anterior chamber of pregnant monkeys abolished the DTH - suppression effect.

与此相反, 将BSA接种于妊娠猴眼则消除对DTH的抑制效应.

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