这是用于起重机的高强结构钢。
注高强度结构钢以下简称高强钢。
Note: The high strength structure steel hereafter referred to as high strength steel.
注：特殊合金结构钢。
镇静钢板是由普通碳素结构钢镇静钢热轧制成的钢板。
The steel plate is made of ordinary carbon structural steel.
横梁采用了轻型结构设计，该结构钢性好，自重轻，运行惯量小。
The light design of crossbeam has a good quality, light self-weight and small inertia.
横梁采用了轻型结构设计，该结构钢性好，自重轻，运行惯量小。
The light design of crossbeam has a good quality, light self-weight and small inertia.
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