The preparation , principles and characters of degradation of photodegradable and biodegradable agricultural film are introduced.

At the receiving end, a photodetector converts them back to electrical signals.

在接收端, 由光电探测器再把光脉冲信号转换成电信号.

A high accuracy method of nonlinearity & amp ; temperature compensation for intramodulated photodetector has been introduced.

介绍了一种展宽内调制光电探测器线性范围及改善其温度特性的高精度方法.

The device comprises pump light, a linear cavity polarization-maintaining optical fiber laser and a high-speed photodetector.

该装置包括泵浦光 、 线性腔保偏光纤激光器及 高速 光电探测器.

Based on the models of the four-quadrant photodetector, general methods for physical models are also summarized.

最后,在建立四象限光电探测器光路模型的基础上, 还总结了物理模型法的一般原则与方法.

This method overcomes the limitation of low selectivity in the traditional photodynamic therapy of cancers.

该方法解决了传统光动力疗法在癌症治疗中的低选择性问题.

Objective To evaluate the efficacy and safety of photodynamic therapy ( PDT ) on patients with advanced esophageal carcinoma.

目的观察光动力疗法治疗进展期食管癌的疗效和安全性.

Photodynamic Therapy ( PDT ) is a kind of effective treatment means to the malignant tumor.

光动力疗法 ( PDT ) 是对恶性肿瘤的一种有效的治疗手段.

As a new technology , Photodynamic therapy ( PDT ) has been considered a ideal method in ARMD.

而激光光动力疗法又是一种较为理想的治疗方法.

AIM : To evaluate the effect of toluidine blue ( TB )-mediated photodynamic inactivation to the supragingival plaques.

目的: 比较不同浓度甲苯胺蓝对龈上菌斑的灭菌效果.

This photo was photoed in front of the Sushi Shop where we had the dinner.

这张照片是在当时吃寿司的店门口拍的.

In this paper the method . making use of photoelastic composite materials is proposed.

本文提出了采用与国外不同的技术途径制作光弹性复合材料的方法.

The steel reinforcement can be simulated a strip of ordinary photoelastic material along the crack edge.

沿着裂缝的边缘粘接由普通光弹性材料制成的窄条,即可模拟钢筋.

The principal advantage of the photoelastic strain gauge is that it is directed reading self-contained.

光弹性应变计的主要优点在于它是直读而整装的.

In photoelastic experiments their difference is determined.

在光弹性实验中,所确定的是它们的差值.

New stress separating method in photoelastic test with light-sensitive coating is introduced in this paper.

本文介绍了在贴片光弹测试中分离主应力的一种新方法.

Methods: Three dimensional photoelastic method.

方法三维光弹冻结切片法.

Method The biomechanics method of photoelastic experiment was em-played.

方法采用生物力学光弹性实验方法.

Vibration field can make the photoelastic pattern and light intensity matrix change regularly.

振动力场的引入使光弹性图像和光强度矩阵发生了规律性变化.

Photoelectric spectrophotometers give better result.

用光电分光光度计能得到较佳结果.

Tho nbsp ; electrical connection in the photoelectric elevator involves ee ectronics.

光电升降机内的电气连接涉及到电子学.