And this paper summarizes their progress and wide use in organic reactions according to their unique non - dissolve property, acidity, activity and selectivity in recent years.

综述了近年来此类催化剂以其独特的不溶性、酸性、活性、选择性在有机合成反应中的广泛应用。

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This paper reviewed the effects of the non uniform distribution of active components on the activity, selectivity and stability of catalyst.

本文评述了活性组分不均匀分布对催化剂的活性、选择性和稳定性的影响。

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The selectivity leakage protective system can give out alarming signal or cut off the fault branches selectively when the leakage fault happens, and the non-fault branches are working normally.

选择性漏电保护是指当电网发生漏电故障时，能够有选择地发出故障信号或切断故障支路电源，而非故障部分继续工作。

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The World Conference on Human Rights reaffirms the importance of ensuring the universality, objectivity and non-selectivity of the consideration of human rights issues.

UNESCO: Vienna Declaration and Programme of Action