The potable water expansion tank shall be of drawn steel construction.
这种饮用水膨胀罐应该是拉制钢结构。
The five characteristics of cold-drawn steel industry status are expounded.
分析了冷拔钢材行业现状的五大特点。
Lifts and service lifts. drawn steel wire for elevator ropes. specifications.
载客电梯和货梯。电梯缆索用冷拔钢丝。规范。
Lifts and service lifts. drawn steel wire for elevator ropes. specifications.
载客电梯和货梯。电梯缆索用冷拔钢丝。规范。
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