permissible level

基本解释

The exposure in different sits of body surface inroentgenologists was lower than the permissible level.
放射科医生体表各部位的照射量均低于容许水平。
In two months it had reached almost 33 millisieverts, or a third the level normally permissible for those working on a nuclear accident in a year.
在接下来的两个月中它已基本上达到33毫西弗特，或者达到工人所能够在核事故工作一年的第三等级。
Open-jaw itineraries are permissible within same fare level. Open-jaw in different fare levels is not allowed.
在同一价格区域内的各点之间可以使用开口行程，但在不同价格区域的各点之间的开口行程不适用。

But Ayatollah Khamenei, without referring to Rafsanjani or the reformist camp by name, insisted that it is not permissible to level criticism at the system, and that those who do so "will be hated by the people for causing strife."

Simplifications allow a permissible level of error to enter into the model in the hopes of making the it simple enough to run quickly, the concept understandable, and the results readable.
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In two months it had reached almost 33 millisieverts, or a third the level normally permissible for those working on a nuclear accident in a year.
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