Choose a device with the lowest SAR possible (SAR = Specific Absorption Rate, which is a measure of the strength of the magnetic field absorbed by the body).

选择一个尽可能的的最低吸收率设备（SAR=Specific Absorption Rate，是一个人体吸收磁场强度的计量单位）。

youdao

As a result, federal agencies require phone manufacturers to post information about how much radiation the body might absorb for each model, called its Specific Absorption Rate or SAR.

因此联邦机构要求手机制造商标明人体可能会从每部手机吸收多少放射物，这又被称作电磁波能量(SAR)。

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You can get an idea of the relative amounts of radiation various cellphone models emit by looking at their SAR, or specific absorption rate.

你可以通过查看不同手机型号的吸收率，来了解手机的辐射。

youdao

The Australian research focused on the thermal effects or specific absorption rate (SAR) of radio frequency radiation - a measure of its actual effects on brain tissue, whereas the earlier study simply looked at electromagnetic radiation levels.

BBC: Hands-free mobiles given safety boost