Proven system engineering的意思|示意

The measuring system was applied in actual temperature test in JL465Q1 and JL475 engine for several times, its precision was proven to be satisfied with the engineering demand.

发动机温度测试数据采集及处理系统在JL465Q1和JL475发动机上进行了多次温度测试，测试精度满足工程需要。

The developed water washing engineering vehicle, with converter as its power system, and with proven technology, features low cost, simple system and reliable protection.

开发的水冲洗工程车采用劈相机系统作动力系统，技术成熟，成本低廉，系统简单，保护可靠。