As the largest steel spring material such as stainless steel anti-corrosion materials can not be produced, poor corrosion products, the life of the valve is not long.
由于弹簧材料钢性大不能用不锈钢球阀等防腐材料制作，产品防腐能力差，阀门的使用寿命不长。
With its bankable leading man and fresh material, it may well land the award for the show of the spring.
极具号召力的人物加上令人耳目一新的作品，这场展览完全可以获得春季最佳展览的殊荣。
The material choice is simple: the shoe is a laminate with Carbon fibre for the core which gives the shoe its spring and strength, leather on the foot side and rubber on the walking wearing side.
这种材料的选择很简单：鞋材以一层碳纤维为主，碳纤维能提供鞋子必须的支撑强度，也很有弹性，接触脚的一面贴着皮革，鞋底的一面贴着橡胶。
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