Arteannuin element most suitable absorption wave length is 290 nm, and the extinction-density regression equation is:Y=0.043X+0.006. The different arteannuin element sample content has the difference. 青蒿素的最适吸收波长为290.
magnetic tape recording wave meter 磁录式波浪仪
Bill wave his hand to us and then drive away. 比尔向我们挥手告别后开车走了。
Radio2 can be heard on the long wave band. 第二广播电台可在长波段收听到。