Aim at current existent problems and defects in visual approach slope indicator, a new Precision approach Path instruction method has studied.
针对现有目视进近下滑坡度指示系统存在的问题和缺陷，研究了一种新型精密进近航道指示方法。
2
The radar level indicator is a non-contact high-precision one and has the advantages of precision in measurement, high efficiency and simplicity in installation.
雷达料位计是一种非接触式的高精度液位仪表，具有测量精确、效率高、安装简单等特点。
3
Automatic display of indicator card not only has promoted the test efficiency, but higher test precision is also resulted.