projecting system

Clinical study on projecting angle and dosage of dental radio vision graphy system

口腔数字成像系统投照剂量及角度的临床研究

Objective: To study correct projecting angle and intensity of dental radio vision graphy ( RVG) system X-ray for obtaining high quality digital dental photograph.

目的：探讨口腔数字化成像系统X线的正确投照剂量和角度。

A colorimetric study of the oil film light valve black and white image projecting system

油膜光阀黑白投影机中的色度学问题

Results: For the RVG X-ray system the projecting angle was increased, especially for mandibular former teeth, comparing with conventional dental film.

统计确定每个牙位数字化牙片正确的投照角度和投照剂量。结果：与传统牙片比较，数字化牙片投照角度增加，其中以上颌后牙和下颌前牙角度增加较为明显。

Starting from the vocational talent orientation and the serious situation of social employment, we offer some probings and ponderings on employment conditions talent training mode and course projecting system.

以高职人才定位和目前社会就业形势严峻的态势为出发点，提出了高职生的从业现状、人才培养模式，并在课程体系研究方面作了一些探索和思考。

An active depth from defocus in projecting system

投射离焦三维测量方法