根据髓室底的形态以及半岛形髓室底和髓壁之间牙本质融合带的位置将重建图像分为四型。
The reconstructed images were classified into four types based on the shape of the pulp chamber floor and the location of the dentin fusion between the peninsular-like floor and the pulp chamber wall.
结果：灰质异位症依据形态与位置，主张将其分为四型：室管膜下型、非室管膜下型、结节型、弥漫型。
Results: Brain gray matter heterotopia were classified into four types according to their locations and shapes: subependymal type, non-subependymal type, nodular type and diffuse-type.
公司调查了2,000名司机，分为四类：经济型、中型、运动型多功能汽车(SUV)和豪华型汽车(如宝马7系或梅赛德斯m级汽车)司机。
The company polled 2,000 drivers, broken into four categories: drivers of economy cars, midsize, sport-utility vehicles and luxury (like BMW 7-series of Mercedes m Class).
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