每一个项目始于钩针链缝，钩针，最常使用单一或双钩针。
Every crochet project starts with chain stitch, and most use single crochet or double crochet.
对需要增加防尘条或无防尘条的缝制是最为理想的链缝设备。
It is the most ideal chain sewing equipment for sewing in dust-proof strip or non dust-proof strip.
用回流加热链着火分析法，分析比较了钝体燃烧器和开缝钝体燃烧器不同的稳焰机理。
By the method of circle heating chain analysis, the different mechanism of flame stability between bluffbody burner and slitting bluffbody burner were compared.
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