Diagnosis should include history of exposure to radiation, which dose exceed the dose threshold, and typical clinical characteristics.

诊断时应有明确的射线接触史，并超过剂量阈值，出现典型的临床特征。

youdao

If the dose of radiation exceeds a certain threshold level, then it can produce acute effects, such as skin redness, hair loss, radiation burns, and acute radiation syndrome (ARS1).

如果辐射剂量超过一定的阈值水平，那么它可以产生，如皮肤发红，脱发，辐射烧伤和和急性辐射综合症(ARS1)等急性影响。

youdao

The threshold level at which some kind of reaction can occur may be less than a thousandth of a potentially fatal dose, so where do you draw the line?

可能发生某种反应的临界值也许不到可能致命剂量的千分之一，那么，你在哪里划这条线呢？

youdao

The committee has concluded that there is no compelling evidence to indicate a dose threshold below which the risk of tumor induction is zero.

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All dose limits are presently determined by using the Linear No-Threshold dose hypothesis (LNT).

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The straight-line portion of these types of curves above Earth background has been the basis for the Linear No-Threshold Dose hypothesis, or LNT.

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