性能的恶化 meaning in Chinese

penalty

It is found that the hub leakage flow leads to an increased flow blockage near the hub , resulting in drop of rotor performance
结果表明：叶根泄漏流可使叶根附近流动堵塞增大，造成转子气动性能的恶化。
The microwave magnetic sintering can not only lower the sintering temperature and shorten the sintering time , but also decrease the micro - grain size of magnets and make intergranular phase and grain boundary of main phase distributed well . the abnormal grain growth was found in conventional sintered ndfeb magnets , which may be due to the greater particle size and uneven distribution of powder , and higher sintering temperature and longer sintering time . of course , the abnormal grain growth would deteriorate the magnetic properties
微波磁场烧结的不但降低烧结温度，缩短烧结时间，而且使磁体整体加热，受热更均匀，因而磁体晶粒更细小，并且主相晶粒边界趋于规则化，晶间相的分布更均匀；在常规烧结的磁体中则出现了晶粒异常长大现象，造成这一现象的原因，一方面可能是烧结温度过高或烧结时间过长，另一方面可能是磨制的粉体均匀性较差，存在的大颗粒被许多细小颗粒包围，在烧结过程中，大颗粒不断吞并小颗粒，逐渐长大，而异常长大的晶粒自然会导致磁体性能的恶化。