Objective: to get anatomical parameters of pyriform aperture area and to investigate its clinical significance.

目的：获得有关梨状孔的各项解剖学数据并探讨其临床意义。

Objective: To study the scanning electron microscopic (SEM) characteristics of floor between lateral recess and lateral aperture of the fourth ventricle in the mice with vascular dementia (VD).

目的：观察血管性痴呆（VD）小鼠第四脑室外侧隐窝与外侧孔之间室管膜游离面扫描电镜特征。

Objective to made the anatomic observation on the piriform aperture and its peripheral bone structure for the clinical reference.

目的为临床提供梨状孔和周边骨性结构的解剖学测量数据。

Objective To investigate treatment of using the method of neurolysis for cervical nerve compressing of the entrapment syndrome outside spinal aperture.

目的探讨用神经松解术治疗颈神经根椎孔外卡压综合征。

Objective To determine the role of shape alteration and aperture size of transverse foramen in the vertebral artery type of cervical spondylosis.

目的通过对颈椎横突孔的测量与对椎动脉的形态的观察，评价横突孔在椎动脉型颈椎病形成过程中的实际作用。

The objective has high infrared transmission, large relative aperture and high resolution.

该物镜红外透过率高、相对孔径大、分辨率较高。

The focusing properties of partially coherent and circularly polarized Bessel-Gaussian beams through a high numerical-aperture objective are studied.

研究了部分相干圆偏振贝塞耳-高斯光束经高数值孔径透镜的聚焦特性。