最后指出螺旋管的允许工作压力应综合考虑爆破强度、应力状态和使用环境等因素确定。
It was concluded that the allowed working pressure of the spiral tube should be determined through considering bursting strength, stress states and process conditions comprehensively.
通过分析认为左厂房机组蜗壳工作性态正常，应力和变形均在设计允许范围内。
Through analysis, we consider that the spiral case of left powerhouse units works normally, and that the stress and deformation are within the range of allowable design.
应力和变形均在设计允许范围内，工作性态正常。
The stress and deformation are in design range, and it works normally.
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