目的观察和比较大鼠、家兔脑动脉的形态特点。
Objective the anatomic features of the brain artery were observed and compared on the rat and rabbit.
目的：观察和比较两种浓度氟保护漆在体外抑制人牙釉质脱矿的能力。
Objective:To observe and compare the inhibitory effect of two concentrations of fluor protectors on demineralization of human enamel in vitro.
本研究旨在观察和比较波形与直形钢板内固定对局部皮质骨血供的影响。
To survey and Compare the effect of wave - plate and straight plate internal fixation on the blood supply of local cortical bone.
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