海词手机词典

[Objective] The material consisting of poly (ethylene glycol) and poly (butylene terephthalate) segmented copolymer (PEG/PBT) has excellent mechanical properties and biodegradation characteristics.

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