... 圆弧桌椅 Globos Collections 圆弧射线 circular ray 实心圆弧 Filled Arc ...
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gas-filled arc tube 电弧放电充气管
Notice that the third arc from the center is not filled.
请注意，从中心开始数的第三个弧未填充。
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Arc stiffness and heat concentration filled wire easily, especially suitable for bicycles and other industries to fill the welding wire.
电弧挺度好，热量集中，填丝容易，特别适宜自行车等行业的填丝焊接。
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