Objective to explore a rapid method of calculating an equivalent square field for irregular photon beam fields.
目的探讨一种快捷、准确求光子束不规则射野等效方野的方法。
The 3, 000 square-meter restaurant stretches over two floors and is equivalent to half the length of an American football field. It has 1, 500 seats.
该店有两层楼，占地3千平方米，相当于半个美式足球场，店内设1500个座位。
The 3, 000 square-meter restaurant stretches over two floors and is equivalent to half the length of an American football field. It has 1, 500 seats.
该店有两层楼，占地3千平方米，相当于半个美式足球场，店内设1500个座位。
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