The temperature difference between two adjacent tubes is in a safe range, causing no excess thermal stress.
管间温差也在允许范围内，不会引起过大的温差应力。
The shaft extension should be maintained at a safe range in order to avoid critical speed at rotor bending modes.
为了避免转子超越弯曲模态的临界转速，转子轴伸长度应控制在安全范围内。
The shaft extension should be maintained at a safe range in order to avoid critical speed at rotor bending modes.
为了避免转子超越弯曲模态的临界转速，转子轴伸长度应控制在安全范围内。
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