《无用设计》是2011年人民邮电出版社出版的图书，作者是陈俊达。本书以“可持续设计”（Sustainable Design）为主题，强调设计要能创造出价值，让读者认识到为了创造一个可持续的未来，去设计所扮演的角色与发展方向。
Lanchester的设计中，两个平衡轴以两倍于机轴转速，反向地转动，抵消了无用的次生振动。
In Lanchester's design, two balance shafts rotated in opposite directions at twice the crankshaft speed to cancel out the niggling secondary vibrations.
是什么阻碍了你的设计？也许是太多无用的元素？
What maybe holding back your design maybe too many useless elements.
然而，这些设计的主要缺陷在于，这些宇宙飞船通常体积很大，其中包含了大量无用的空间。
However, the mainshortfalls of these types of vehicle are that they are often very largeand contain a lot of empty space.
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