水处理站双室阴离子交换器自投运以来周期一直不平稳，严重的制约着水处理站的经济运行。
The running period is always unstable, since the double-room anion exchanger of the water treatment plant have restricted the economic running seriously.
放牧家畜饲养周期长，出栏率低，是制约高寒草甸畜牧业生产的最大瓶颈。
The longer raise period and lower slaughter rate constitute the important limiting factors for livestock production on high frigid meadows.
造成稳定性较差，一般镀液仅能使用4 ~ 5个周期，化学镀液的稳定性是制约化学镀镍的一个重要因素。
Caused by poor stability, the general solution can only use 4 to 5 cycles, the stability of the chemical bath of electroless nickel plating restricting an important factor.
应用推荐