A calculating formula for freezing time has been established. Compared with other theoretical formulas, it gives less difference from actual conditions, therefore it has a practical value.
作者建立了冻结时间的计算公式，该公式与其他理论公式相比，与事实相差很小，所以具有实用价值。
Provided the method of calculating natural ventilation rate, and validated it with an example. The result shows that the theoretical value inosculates with measurement one.
利用某建筑实测结果对理论计算所得自然通风量进行验证，结果表明理论计算值和实测结果吻合。
The correctness of calculating weighting value is validated and the theoretical basis for the specific selection of self-piercing riveting process test is est…
通过对铆接试件的初步静拉力试验和疲劳试验，验证了计算权重值的正确性，为自冲铆接工艺试验方案的比选建立了理论基础。
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