This system can determine 13 isotopic peaks by single beam method.
该系统使用单束法能测定13个同位素峰。
Then give two feasible method, eccentricity beam method and double pinhole method.
为此我们提出两种实现方法,偏心光束法和针孔调焦法。
The double-arch tunnel passes through a big water-eroded groove by setting foundation beam method.
双跨连拱隧道以设置地基梁的方式穿过大型溶槽地段。
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