钾质白云母是铅锌银矿床中的主要热液蚀变矿物,通常表现为白云母化、绢云母化、伊利石化.Potash micatization is one of the main hydrothermal alteration minerals genetically related to the lead - zinc - silver deposit.康山金矿田围岩蚀变主要为硅化 、 绢云母化、碳酸盐化及黄铁矿化.The main wall rock...
Nothing happens until the excitatory stimulus exceeds a certain'threshold'value.兴奋性刺激超过某一临界值以前毫无反应.Glutamate ( Glu ) is the main excitatory neurotransmitter in the central nervous system ( CNS ) .谷氨酸 ( Glu ) 是 ...