SUP26A聚焦镜片的安装（中英）

注意：

be careful:

1.更换时请注意现场环境，建议使用密封胶带防护更换

Please pay attention to the on-site environment during replacement, and it is recommended to use sealing tape for protection and replacement

2.聚焦镜密封圈为：15*21*2.7

2. Focusing mirror sealing ring: 15 * 21 * 2.7