Warning: file_put_contents(): Only 0 of 4825 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/62383.com/index.php on line 55 boiler plug例句_boiler plug英汉例句_boiler plug双解例句_流逝汉英词典
The Mo alloy inlaid piercing plug is especially suitable for piercing of low alloy pipes and high pressure boiler pipes. 镶嵌式钼合金穿孔顶头尤其适用于低合金钢及合金高压锅炉管的穿孔。