内弹道程序，主要计算内弹道参数，计算出内弹道的各个参数和变量，得到内弹道规律。-Interior ballistics program, the main computing trajectory parameters to calculate the various parameters and variables of the interior ballistics, interior ballistics law.

内弹道计算程序，简单计算经典内弹道的ptvl-Interior ballistics calculation program

改程序为火炮内弹道程序，可以计算气体压力，速度等变化情况-Reform program for the Interior Ballistic program can calculate the gas pressure, speed changes

内弹道计算程序，准确描述了内弹道过程，通俗易懂-Interior ballistics calculation program, an accurate descr iption of the interior ballistics process, straightaway