During axis adjustment, GE Company not only measures verticality of unit axis, but also calculates throw from survey measurements of verticality.
GE公司在轴线调整过程中，不但要测量机组轴线垂直度，同时还通过对垂直度的测量读数来计算摆度。
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Improper adjustment will result in errors of recoil force, verticality and repeatability, and also result in machine vibration (it will rapidly swing if the frequency is high).