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抬起圆锯后，弹簧绷紧压入的保护罩会自动在锯片下方关闭。
As you lift the saw, the spring-tensioned telescoping guard will automatically close under the blade.
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木工圆锯机上方应设防护罩，防止木屑飞溅或锯片破碎伤人。
Saw woodworking machines should be the top security guard, to prevent flying chips or broken saw blade wounding.
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