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The concrete pump truck is a main equipment of construction machinery during commercial concrete …
混凝土泵车是商品混凝土运输、浇筑施工的主要设备之一。
youdao
-
The concrete pump truck is a main equipment of construction machinery during commercial concrete …
混凝土泵车是商品混凝土运输、浇筑施工的主要设备之一。
youdao