钢丝绳iwr什么意思?
IWR是指金属丝绳芯metallicwireropecore。\r\nIWS是指金属股绳芯merallicwirestrandcore。\r\nIWRC是指独立钢丝绳芯。\r\n都指的是钢芯的钢丝绳。\r\n