看，蓝金相间的边角线也很整齐，里面肯定是含一些元素的。

See, trim lines, blue and gold, and it has elements on it.

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对引进的聚丙烯纺粘法非织造布生产线进行产品幅宽改进和边角料回收系统改进。

The technical reform targeted at product width and edges recycling system of imported polypropylene spunbond nonwoven line.

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LL - GCB1200废电路板大型干式生产线主旧电路板、覆铜板、线路板及边角料等物料中的要用于对废金属与非金属的分离。

To be used for the separation of scrap metal and nonmetal waste board of LL-GCB1200 large dry production line of the old board, CCL, circuit boards and scrap materials.

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See, trim lines, blue and gold, and it has elements on it.

看，蓝金色相间的边角线也很整齐，里面肯定是含一些元素的。

麻省理工公开课 - 固态化学导论课程节选