Water shutoff agent DSZ-A is composed of inorganic particle.Its specialities are low cost,easily flow,high strength and long valid period.是什么意思_Water shutoff agent DSZ-A is composed of inorganic particle.Its specialities are low cost,easily flow,high strength and long valid period.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句