沥青，人造沥青：某种厚厚的、黑而粘的物质，由炭焦、木焦或石油的剩余物中提炼出来，用于防水、盖屋顶、填缝和铺路。

Any of various thick, dark, sticky substances obtained from the distillation residue of coal tar, wood tar, or petroleum and used for waterproofing, roofing, caulking, and paving.

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下一步就是缝合服装拱起的部分，例如领子、克夫和袋盖，缝角有一定的技术要求。

Bagging out garment sections such as collar, cuffs and pocket flaps is the next stage in the development where technique is required for stitching around the corner.

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封盖可选择平行缝焊、 钎焊、 玻璃熔封或树脂粘结。

The fixing and sealing may choose among parallel - seam welding, braze welding, glass - melting - sealing and resin binding.

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