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To study the correlation of the power output, exposure duration and tissue temperature.

通过体外测温初步探讨微波凝固输出功率及辐射时间与组织温度的关系。

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The principle of exposure duration calibration is formed by adjusting exposure duration and keeping other parameters of digital color camera.

仅改变曝光时间，保持相机的其它参数不变，建立了曝光标定原理。

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Doses may be chronic or acute depending upon the duration of exposure.

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But the duration of wind exposure also plays a role in damage.

WSJ: Few Precedents to Help Predict Hurricane Damage