It consists of outer layer sealing constant temperature jacket, middle layer objectivesleeve and inner layer as lens frame to partition and fix optical lens elements.
它由外层密封恒温外套、中间层镜筒、内层为分隔固定光学透镜元件的透镜框组件组成。
2
Objective To observe the morphologic characteristics of myocardial sleeve in sheep~(, ) s pulmonary veins to provide data for the model of ectopic atrial fibrillation.
目的观察山羊肺静脉心肌袖的形态特征，为异位房颤动物模型提供形态资料。
3
Objective: To report the surgical experience of bronchial sleeve resection for the treatment of central lung cancer.