【专家解说】：沼气表、沼气灯、沼气灶、沼气发电机、沼气锅炉 Table gas, gas lights, gas stove, gas generators, gas boilers,
金刚石工具,
金刚石切片,
锯片,
切片,
(研磨用)磨轮/砂轮,
花岗岩,
大理石,
水泥,
(钻墙壁孔用)钻头,
Diamond tools,
Diamond section,
Saw,
Slices
(Yan Moyong) of abrasive wheels / wheel,
Granite,
Marble,
Cement,
(Drill hole with walls) bit,
