The data indicates that the machining accuracy will be promoted when the span of spindle and the rigidity of bearing or damping coefficient are increased.
研究表明，要降低振动对加工精度的影响，应当适当加大主轴跨距，同时增大轴承支承刚度和系统阻尼系数。
2
Composite grating is a product made of the grating with the spanbearing capacity and checked plate with the sealed surface.
复合钢格板是由具有一定横跨承载能力的钢格板及密封表面的花纹板构成一种产品。
3
The test results show that the externally prestress technology can be applied in strengthening concrete simple span beam to enhance its bearing capacity and ductility.