Ferrous tool materials have iron as a base metal and include tool steel, alloy steel, carbon steel, and cast iron.
黑色工具材料以铁为基材，包括工具钢，合金钢，碳钢，铸铁。
The charging sphere and column are mounted on a heavy cast-metal base along with a discharge sphere with a movable arm.
此蓄垫球及盒装置在一很重的金属基座上，并有一可移动的放电球。
The charging sphere and column are mounted on a heavy cast-metal base along with a discharge sphere with a movable arm.
此蓄垫球及盒装置在一很重的金属基座上，并有一可移动的放电球。
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