target cross section

例句：

1. 1. The projectaims to increase the efficiency of the targetcross section.
   该项目旨在提高目标截面的效率。
2. 2.The engineer used a laser beam to cutthrough the target cross section.
   工程师使用激光光束来切割目标截面。
3. 3. Thescientist focused on studying thetarget cross section in the experiment.
   科学家专注于研究实验中的目标截面。