dry plastic layer 干燥的塑料涂层
volume curve of plastic layer 胶质层体积曲线
maximum thickness of plastic layer 胶质层最大厚度
index of plastic layer 胶质层粘结系数
plastic drain layer 塑料排水管敷置机
plastic multi-layer blow moulding 多层吹塑
plastic double layer injection moulding 双层注射成型
plastic mulch layer 塑料地面覆盖层
The Earth's crust is thought to be divided into huge, movable segments, called plates, which float on a soft plastic layer of rock.
人们认为地壳分成了巨大的、可移动的部分，称为板块，这些板块漂浮在柔软可塑的岩石层上。
The appearance of the stated plastic layer 4 is consistent with the existing nut.
上述塑料层4的外形与现有的螺帽一致。
The structure of pipe is thin inner plastic layer and thick outer plastic layer, easy to join with hot-melt pipe fitting.
生产的管材结构为内塑层薄外塑层厚，以利于与热熔管件连接；
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