Double toggle mold closing system with a large force magnificationratio and a large stroke ratio.
角 双曲肘合模装置，大增力比和大行程比。
2
Fixed-point scaling and interpolation can eliminate the influence of optical magnificationratio varying with position variation of measuring points is obtained, 2.
双光路方案或标准点校准方法可以消除光线路径随环境温度、湿度变化而引入的误差；
3
When viewing extended objects, the apparent brightness seen in the eyepiece is a function only of aperture and magnification, it is not related to focal ratio.