Loosen scale retaining ring and remove turn indicator assembly . it is not necessary to change the memory set point 松开刻度固定环，拆卸旋转指示器总成。不需要改变记忆设置点。
Fixed - seal & rotational - seal are made of various msterials , sic , carbon , ceramic and can withstand various chemicals 固定环及转动环由各种不同材质， sic ，碳素，陶瓷制成，可承受各种不同的化学药水。
Mechanical transmissions . concentric assemblies on cylindrical carried with intermediate bush with conical external surface . calculation 固定环连接。在带有锥形外表面的中间套简的园柱支承面上。计算。
Stationary ring enclosure is made out of concentrated carbon graphite , anti - wear - out , waterproof , and suitable for dry operation 固定环封闭物是特殊的材料,是抗磨损碳精石墨所制造的,不透水和乾式运转。
Loosen the scale retaining ring and rotate the turn indicator scale to align with the “ 0 ” on the handwheel . tighten the scale retaining ring by hand . do not overtighten 松开刻度上的固定环，旋转指示器刻度使其对齐手轮上的“ 0 ” 。用手紧固刻度上的固定环。不要过紧。
Finally , a rigid - flexible coupled virtual prototype of the gun system is established when the material properties of the fixing ring is taken into account , and the dynamic behaviors of the rigid - flexible gun system are initially analyzed 最后，结合有限元分析软件ansys ，利用它与adams的接口，把固定环柔性化，建立航炮系统的刚柔耦合虚拟样机，进行了航炮刚柔耦合系统动力学仿真的初步研究。
