题目内容
弓丝与槽沟间摩擦力最小者为同时使用
2021-11-15
A.不锈钢托槽+镍钛弓丝+不锈钢结扎丝
B.不锈钢托槽+不锈钢弓丝+不锈钢结 扎丝
C.不镑钢托槽+不锈钢弓丝+弹力结扎
D.生物陶瓷托槽+镍钛弓丝+不锈钢结扎
E.生物陶瓷托槽+不锈钢弓丝+弹力结扎
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