预缩痕 由于预缩调节的张力太松而导致布在进入橡胶辊之前打槢在经过辊压后形成的预缩痕
Pre-shrinkage marks are formed when the tension regulated by pre-shrinkage is too loose, causing the fabric to make 槢 before entering the rubber roller and then undergo roller pressing
以上为机器翻译结果，长、整句建议使用 人工翻译 。