The manufacturing method, dynamic characteristics analysis and the comparison with casting machine bed are described in the paper.

介绍了聚合物混凝土机床床身的制造方法、 动态特性，以及与铸铁机床床身的优劣比较与分析。

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As a new engineer material, steel-fiber polymer concrete has been studied in the text, which can improve static and dynamic characteristics of machine bed.

钢纤维聚合物混凝土是一种能提高机床静、动态性能的新型工程材料。

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At Vassar College, in the 1980s, the argument was usually framed with a thought-experiment: Imagine that you wake up in a hospital bed, hooked up to a machine and soon realize that if you disconnect yourself from the machine, the person in the next bed will die.

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And last month, she received a patent for her Time Machine, an LED light bed, which she invented to help reverse signs of aging on the entire body.

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The day after a knee replacement, most orthopedic surgeons have their patients use a continuous passive-motion machine, which flexes and extends the knee as they lie in bed.

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