The height of crowns, the center height of clinical crowns, and the width and length of the dental arch were measured with a digital vernier calliper.
用数显游标卡尺测量实验组模型牙冠高度，牙弓宽度和长度，计算出临床冠中心高度，并与对照组进行对比分析研究。
A large arch has been cut out of the center of the structure's primary facade - a dramatic opening formed with a layered composition of elevations.
一个大型拱券分割了建筑主立面的中心——立面的分层构建组成了一个戏剧性的开口。
The crossbow includes an arch fixed to the center spine, and a trigger mechanism was added to it, which can facilitate targeting and retaining the string, so as to make delay firing.
弩将弓装在弩臂上，并增加了可供瞄准和控弦的弩机，因而可延时发射。
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