usually zigzag
通常曲折
以上为机器翻译结果，长、整句建议使用 人工翻译 。
SCR contactor usually used zigzag wave, which linearity is better, but structure is complex and cost is expensive.
SCR触发器常以锯齿波为主，其线性度较好，但结构复杂，成本较高。
youdao
It is easy to operate. The drivers usually contest speed on zigzag ring roads.
车手往往在曲折环行路线上竞速。
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