通过不同工况的对比，表明使用高压变频系统后节能效果显著，提高了系统的安全可靠性。
Through comparison of different working conditions, it is shown that remarkable energy saving effect was obtained and safety and reliability were enhanced after using high voltage converter system.
通过工程实例，介绍大直径筒仓按圆柱壳体理论计算不同工况的内力，计算方法简便实用，同时对不均匀堆煤的影响作了分析，可供设计参考。
Taking an actual project for example, the calculation of internal forces of a large diameter silo under different working conditions according to cylindrical shell theory is described in detail.
通过对比分析得出了在不同工况下优先选用的几种高温炉管材料。
By contrasting and analysis, several material of furnace tube that be selected firstly under the different working circustances is obtained.
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