spare anchor是什么意思

用法例句

The anchoring and mooring equipments are briefly introduced in the paper,with the resistance of floating structures in water analyzed.

简要介绍了锚碇设备,分析了浮体所受阻力,在保证锚链强度的基础上,给出了锚力、锚数和锚链长度的计算方法,对实践操作有一定的指导意义。