The explosive decomposability of ethylene will lead to much large temperature gradient and great range thermal stresses response on thick wall of reactor.
由于乙烯爆炸性分解，在反应管壁厚上形成极陡的温度梯度和幅度很大的热应力。
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Tests of flow pattern showed that the spiral up-flow character of the SUFR make it be similar to plug-flow-reactor, and it is favourable to form gradient distributing of the organism matter.
The first order gradient optimization algorithm is employed to train the network. The training samples stem from the neutron kinetics of the point-reactor.