中小学教师职称制度 the professional title system for elementary and secondary school teachers

也称制造周期 Manufacturing cycle

职称制度 professional title system ; technical title system

又称制冷剂容量可调 Variable Refrigerant Volume

二进制对称信道 [通信] binary symmetric channel

单相对称控制 symmetrical control

单相非对称控制 asymmetrical control

对称密码体制 Symmetric Encryption ; Symmetric cryptosystem

对称多相制 Symmetrical polyphase system

可编程称重控制器 PWC