搜索 - 科创网

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内容：我的塑料-钢复合火箭比冲都有100多了可成本才10块钱另有塑料-纸制低成本简易火箭，采用补偿燃烧室，达到了145的比冲。

内容：我们都知道，降低成本是提高利润的主要手段。,其实好的软件开发其实可以大幅度地降低成本和提高性能。,在最近一次的采访中，ARM公司中国业务总裁谭军对《电子工程专辑》解释了软件在降低产品成本和提高性能中的作用，他指出：“许多人没有认识到软件在降低成本中的重要性，比如一个手机中的软件，如果我们程序编写的好,可见软件在降低成本中所起的关键作用。,所以，毫不夸张地说，如果中国企业只注重靠低廉的劳动力成本来降低成本则我们只能处于制造大国的地位，只能获取低利润，而且，一旦周边地区出现更低的劳动力资源，这仅有的一点竞争优势也会丧失。

内容：至于成本，我觉得，改造、实验成本会高一些(这是必然结果)，但是一旦投入生产，可以大大的降低成本，因为二氧化氮比五氧化二钒或铂铑合金的价格要低得多，副产品的价值也要高一些，如液氮、液氧、液氩、液氦、干冰等等

约找到 707 条结果，耗时 0.233 秒

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