对赛车链条用钢的化学成分及调质后的机械性能进行了研究，从而确定了适用赛车链条用钢的最佳化学成分。

The paper studies the chemical composition of steel for racing bicycle chain and the mechanical properties after being quenched, then the optimum chemical composition of steel is determined.

youdao

用宽吊带吊装涂塑管件，不允许使用链条，钢索，钢钳或者其他破坏涂层的吊装工具，不能拖拉滚动钢管。

Coated articles shall be hoisted using wide-belt slings. Chains, cables, tongs, or other equipment that causes damage to the coating will not be permitted, nor will dragging or skidding of the pipe.

youdao

针对赛车链条用带钢对各种力学性能的苛刻要求，通过化学成分筛选试验与工业性生产相结合的方法，设计了不同化学成分的试验钢，从中优选出合适的合金成分配比方案。

Considering the strict requirements of racing bicycle chain, the optimum composition had been selected from the tested steels, using the screen method in laboratory test combined with industrial test.

youdao