Most have no age limit, though the range seems to be midlife and above.
多数社团对会员的年龄都没有限制，尽管如此，可是，这类社团成员多半还是中年以上的人群。
There is no limit to the range of gastric resection.
同时，胃切除范围也不受限。
The method is sensitive, simple, good selectivity and of wide linear range, low detection limit.
该方法灵敏，简便，选择性好，线性范围宽，检测下限低。
The method is sensitive, simple, good selectivity and of wide linear range, low detection limit.
该方法灵敏，简便，选择性好，线性范围宽，检测下限低。
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