dolars meaning in English

多普勒定位与测距系统

Futhermore , the simulation software based on spatial opertator algebra , for example , the soft of darts based on spatial opertor algebra researched by rodriguez and others in nasa had been used to a serial of dynamical calculation of aircrafts , and it had become the special analysing software , and almost all the dynamics of americal space airctafts were analyzed by this software . it had neraly saving one handure million dolars and had atahed perfect benefit , so it became the gold medal holder of software of nasa in 1997 . but the usa keep the software a secreet to our country , and the software can not shoping wherever . the principle and the method distact form different documents and papers
此外基于空间算子代数的仿真软件，例如美国nasa科学家rodriguez等研究的基于空间算子代数的分析软件darts ，已成功应用于一系列美国航天飞行器动力学仿真计算，成为美国航天飞行器专用分析软件，几乎所有的美国航天飞行器皆由此软件仿真分析，它多年来为nasa节约近1亿美圆，取得了良好经济效益，并成为nasa97年软件金奖获得者。