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提出这样的问题不是没有根据的,因为孕妇在短时间内接受较大剂量或在较长时间受超过安全量的较小剂量X线
It is not unfounded to raise such a question because pregnant women receive larger doses in a short period of time or by smaller doses of X-rays that are in excess of the safe amount for a longer period of time