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.
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.
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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