At this point the upper stem has lost contact with the diaphragms. The valve should be opened to this point but not back seated.

在此时，上阀杆已经失去了同横膈膜的接触。阀门应该开启到这一点，但不能反向固定。

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At this point the upper stem has lost contact with the diaphragms.

在此时，上阀杆已经失去了同横膈膜的接触。

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Taking radiotherapy of tumor stem cells as a contact point, strategy designed by radiobiology can essentially solve this problem.

将肿瘤干细胞作为放射治疗的切入点，针对其放射生物学行为制订对策，才能从根本上解决问题。

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