hem flat 中文意思是什麼
hem flat
解釋
腳口平量-
The equipment should be placed on support tray or on flat surfaces and padded on both sides, beforte installation, thus avoiding hem from rolling because of wind or sloping ground
安裝前應放在托架上或放在平整地面上,兩側墊實,防止因風力或地面傾斜而產生滾動。
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