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This are widely used in the following applications, construction sites, laying of large pipes; installations and adjustments of machinery and electric apparatus ;installing and erecting of masts or other structures; loading and unloading heavy and bulky g |
中文意思: 它被广泛应用于下面的领域:建筑基地,躺着的大管子,机械和电动设备的调节装置;安装和竖起柱子或其它建筑物,装卸又重又笨的货物,拉紧粗索;堆积林木,阻止移动等。 |
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