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 ...
The term'vegetation type'designates the principalunit of major rank in Russian geobotany.在苏联地球植物学中, “ 植被型”一词是指主要高级单位.The air was filled with the overpowering stench of decomposing vegetation.空气中充满了令人难以忍受的腐烂植物的恶...