PVC is the most popular plastic for coating wires, as it is relatively low in cost, resilient, fire retardant and possesses good insulating properties.是什么意思_PVC is the most popular plastic for coating wires, as it is relatively low in cost, resilient, fire retardant and possesses good insulating properties.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句