Upper first molar 上颌第一磨牙
upper first molars 上排第一对磨牙 ; 上颌第一磨牙
upper field first 上场优先
Upper Fields First 上场优先
First Upper Side Lobe Suppression 第一上旁瓣抑制
first degree burn upper limb 上肢一度烧伤
First Upper Die 第一上模
first degree burn upper arm 上臂一度烧伤
Methods: The thickness of enamel and dentin at different positions of 23 upper first and 18 lower first molars were measured by electronic ruler.
方法：用电子测量尺测量23颗上颌第一磨牙和18颗下颌第一磨牙牙合面不同部位牙釉质、牙本质的厚度。
You should obviously try to work on the right-most items as much as possible while giving attention to the upper right quadrant first.
而且你应该尽可能地关注右上象限的任务，并优先处理它们。
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