海词手机词典

With the same condition, the disposal effect of acrylic fiber and polyvinyl alcohol fibre were 6.9% and 2.9% higher than that of polypropylene fibre, which was already used widely as a good forming biofilm fiber.

播放读音 播放读音

以上内容独家创作,受著作权保护,侵权必究

海词词典,十七年品牌