另一较佳实施例则包含了一种掩模制造方法，其更包含一掩模步骤。
Another preferred embodiment includes a mask manufacturing method further including a mask step.
双节段3例则采用前路腹膜外入路，L 4, 5进行人工椎间盘置换术，L5S 1行单枚人工髓核植入。
In double lesion, anterior extraperitoneal approach in 3 cases, L4, 5 received intervertebral disk replacement and L5S1 received single PDN replacement.
如果某个参与者的作用是启动用例，则它的角色就是启动器。
An actor is an initiator when its role is to set the use case in motion.
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