方法：综合考虑根管治疗术中操作相关的基本因素和附加因素，设计了难度系数的计算公式。
METHODS:After the primary and additional factors related to technic difficulties in root canal therapy had been wholly considered, the formula for calculation the difficulty coefficient was set up.
这个系统将给于等级2的治疗术在受到任何的惩罚之前一个附加的6松弛等级；所以，玩家从33级以前施放的所有法术都没有惩罚。
This system gives an additional 6 levels of slack before applying any penalty to casting Heal 2; so, players up to level 33 can cast it with no penalty.
LHRH激动剂为激素受体阳性的绝经前乳腺癌女性患者提供了一种附加的治疗手段。最佳服用时限仍未知。
LHRH agonists provide an additional class of agents for treatment of premenopausal women with hormone-receptor-positive breast cancer. Optimum duration of use is unknown.
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