hénɡ sī （横絲） 指纵横交织的蛛丝。 唐太宗 《初夏》诗：“哢鶯犹响殿，横丝正网天。”
沿横丝绺将面料撕开或剪下。这样，毛边的纱线不会散开。
The fabric is torn or cut along the crosswise grain, so that the yarns at the raw edges can unravel.
为了保持图案的平衡，应在面料的正面沿横丝绺放置样板，这种方法有助于斜接缝。
Position the pattern pieces on the right side of the fabric along the matching crosswise grain line, in order to keep the design balanced. This procedure will aid in mitering seams.
然而，一旦使用这些面料，就可以不考虑丝绺线方向，只需与布边成直角将面料横裁即可。
When these fabrics are used, however, one may ignore the grain and simply cut across the fabric at right Angles to the selvage.
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