If the resistivity is greater than or equal to5000ohm-cm , the chlorides and sulfates requirements may be waived .
如果电阻率大于或等于5000ohm-cm,那么可能就无法满足氯化物和硫酸盐的要求。
Effects of angelica polysaccharide and its sulfates on coagulation and platelet aggregation .
当归多糖硫酸酯对凝血和血小板聚集的作用。
The clay-like phyllosilicates formed more than 3.5 billion years ago where igneous rock encountered water . Hydrated sulfates formed until about 3 billion years ago from the evaporation of salty and sometimes acidic water .
Until now , only two major groups of hydrated minerals , phyllosilicates and hydrated sulfates , have been observed by spacecraft orbiting the red planet .
此前,环绕这颗红色星球的太空船观察过两种主要的含水矿物层状硅酸盐和含水硫酸盐。
And if geoengineering to alter earth 's climate - for example , injecting sulfates into the high atmosphere - is to be an option , who would make the decision and undertake the operation ?