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试验机
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testing machine
试验机
检测材料、零部件和产品的机械(力学)性能、物理性能、耐振动和冲击性能,检测各种旋转零部件不平衡量,定量、定性检测材料或工件表面及内部缺陷的试验仪器和设备。
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principal subgroup
principal subgroup series
principal submatrix
principal submodule
principal subspace
principal surface
principal symbol
principal symbol sequence
principal system
principal tangent
principal tangent bundle
principal telescope
principal term
principal theorem
principal trace
principal translation
principal two-sided ideal
principal type
principal ultrafilter
principal uniformization
principal uniformizing function
principal unknowns
principal value
principal value integral
principal vanishing point
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