大内径旁通和大膨胀间隙确保工具在钻除过程中的可靠性。
D. bypass and large extrusion gap ensure reliability during the removal process.
进行分析研究，推导出一个计算铁心径向热膨胀间隙的公式，供计算应用．。
According to analysis and study about practice application and measurment is derived a formula of calculating the radial heat expansion gaps of the stator core for use in design.
锅炉各部件及相互之间有一定的膨胀间隙，可防止受热面由于膨胀受约束而变形。
There is certain expansion clearance between different parts of boiler and one another which can prevent deformation of heated surface due to restrained expansion.
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