The plate and handling frame are immersed for 5 minutes in each of two successive baths of normal fixer solution . 底片和插片架在两个盛有一般定影液盆内相继各浸泡五分钟。
2.
Switches have three primary modes to handle frame switching . which one of these modes looks at the destination address and then immediately forwards the frame to the destination 交换机主要有三种侦交换模式,哪种选项是得知目的地址后直接转发的方贞交换方式