desired zone

基本解释

All heat to promote the desired extents of reaction in each reaction zone is provided solely from the exothermicity of chemical reactions in the process.
仅由所述方法中的化学反应放出的热量提供在各反应区中促进所要反应程度的全部热；
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In the zone method, the system is divided into surface zones and gas zones, the number being dependent on the desired accuracy of the result and calculation time.
在区域法中，系统被分为表面区和气体区，其数目与计算结果的精度要求和计算时间有关。
In the zone method, the system is divided into surface zones and gas zones and the number of which depends on the accuracy of results desired and calculation time required.
在区域法中，系统被分为表面区和气体区，区域数取决于所要求的结果精度和计算时间。