点物 meaning in English

point object

Thus the images of all extended object can be recorded and reproduced just as for a single point object .
于是，一个扩展物的形象可以如同一个点物那样被记录和再现。
That is, a plane refracting surface does not image all rays from a point object at the same image point .
就是说，平面折射面并不能将来自点物的所有光线都成象于同一家点。
2 . designed acoustic imaging system , it is demonstrated that using acoustic lens imaging is feasible through measuring these sound fields distributing of single dot body and three dots body
设计声成像实验系统，对已知声场中的单点物及同一面上三点物经声透镜变换后的声场分布进行了测量，证实了声透镜成像的可行性。
According to experiment condition , calculated the numerical value of sound field distributing , when analyzing the distributing of three dots body in same plain , we must do point correction . it is indicated that the sound distributing of numerical value and correction ' s is comparative . 3
根据实验条件进行了声场分布的数值计算，在分析声场中同一物面上三点物经变换后的声场分布时，因考虑到声场分布的指向性，进行了声场分布的指向性修正，结果表明数值计算的声场分布和修正后的声场分布是相当的。