反射率

Dynamic evolution analysis of the sandy desertification in the Shenmu area , North Shaanxi, China;2. The stratigraphic order characteristics of coal-bearing strata in the Lower and Middle Jurassic in Shenmu area , North Shaanxi;3. Studies of longitudinal and horizontal distribution of coal reservoir,macroscopic petrographic types,microcosmic petrographic component,pore configuration and permeability,vitrinite reflectance as well as absorbability in coal-bearing formation of Neopaleozoic in Shenmu area of the Ordos Basin indicate that,coal beds are thicker in the east and west,but thinner in the north and south.

通过对鄂尔多斯盆地神木地区上古生界含煤岩系中煤储层的纵横向分布、宏观煤岩类型、微观煤岩组分、孔隙结构与渗透性、镜质体反射率和吸附性能等方面特征的研究，认为：煤层总厚呈东西厚、南北薄的分布特点，煤层厚度满足煤层气开发的要求；多为半亮煤，仅东部边缘地带以半暗煤为主，表现为低含水、中等灰分含量和高挥发分含量的烟煤；煤岩显微组分中，镜质组含量最高，其次为惰质组；孔隙类型以微孔、过渡孔为主。

Quartz overcoated optics for long-lasting reectivity and cleaning without damaging the optical surface.

石英镀膜的光学器件确保长期使用下仍具有很高的反射率，并且清洁时不会破坏光学件的表面。

The petrographical composition and reflectance of Chinese steam coal are summarized and the change of petrographical composition and reflectance with coal formed age, coal classes and coal field is also analyzed and assessed here.

总结概括了我国动力煤的岩相组成、反射率等按成煤时代、煤种和地区的变化规律并对其进行了初步的分级。

The coal petrologic automatic analysis is realized mainly by means of random reflectance of vitrinite.

摘 要：煤岩自动分析主要采用镜质组随机反射率自动测试技术来实现。

Nowadays there is a certain difference between rapid scanning and automatic data acquisition method adopted in automatic test and necessary stable time required by reflectance test and strict requirement on object to be tested, this is the main issue existing in coal petrologic automatic analytical technology now.

目前自动测试所采取的快速扫描和自动数据采集方法，与反射率测试所需的必要稳定时间和对测试对象的严格要求有一定差距，这是目前煤岩自动分析技术存在的主要问题。

In the submodel, the reflection coefficient of the canopy changed with the sine of the solar angle and the relationship between the extinction coefficient for photosynthetically active radiation and PDT was quantified.

模型引入高斯积分法简单有效地计算冠层每日的总光合量，并考虑了冠层辐射反射率的日变化及消光系数随生理发育时间的变化，使模型对冠层辐射吸收与光合作用的定量更加准确。

Block and random pyromellitic dianhydride - 4,4\'-oxydiphthalic anhydride /4,4\'-oxydianiline(PMDA-ODPA/ODA)-based copolyimides were synthesized in our work and used as the matrix to investigate the influence of copolymerization ratio and sequence on the properties of the metallized films.

其中，嵌段共聚型聚酰亚胺由于两组分保持了自己的独立特性，产生了协同作用，所得到的薄膜同时具有了较好的反射率和导电性。

According to reflectional spectrum of pictures, we can measure hue by main wave length.

根据图像的分光反射率，建立主波长的操作型意义，因而可以定量地表示色相。

This is the sensor of choice where it is possible to apply the adhesive-backed retroreflective tape to the target surface, since this provides a strong return signal for optimum operation.

而且这只是为了获得最佳反射率才使用胶背反光胶带到目标表面的一种选择。

The influence of the gap between the prism and negative-refractive-index film on the measurement is both theoretically and simulatively studied.

用传输矩阵法进行了模拟论证，得到了模拟反射率曲线，同时模拟分析了空气间隙对测量结果的影响。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷