英语语法分析

Objective To know the mechanisms of treating dentine hypersensitivity by ns Paint.

目的探讨NS牙面涂料对牙本质过敏症的治疗机制。

Found in the scales of Palaeozoic fishes as a superficial layer over a dentine structure.

发现于古生代鱼类的鳞片形成覆于齿质结构之上的表面层。

AIM: to observe the effects of treatment on hypersensitive dentine by semi-conductor laser.

目的：观察半导体激光治疗牙齿感觉过敏症的疗效。