| 1. | Study on superior conservation grading index of the rare plants 珍稀植物优先保护分级指标的研究 |
| 2. | Comprehensive evaluation study on grade index of certain gold - copper deposit 金铜矿床品位指标的综合评价研究 |
| 3. | Optimization of the grade index of magnetite ore in baiyunebo iron mine in china 白云鄂博铁矿磁铁矿石品位指标的优化 |
| 4. | The index of the element represents the grade index 0 represents kindergarten 元素索引表示年级(索引0表示幼儿园) 。 |
| 5. | Analysis of metal - clad graded index planar optical waveguides with edge element method 金属包层渐变平板光波导的边缘元分析 |
| 6. | On such a basis , the grade indices for appraisal of crustal stability is established , and an evaluation is made on crustal stability of this area 在此基础上建立了地壳稳定性评价分级指标,并对本区的地壳稳定性进行了评价。 |
| 7. | An intensity modulated fiber optic micro - accelerometer with a digitally feedback circuit is designed . this sensor employs a graded index lens with a reflective coating on one end and measures the relative displacement between the lens and a pair of optical fibers 在本系统中设计了脉冲数字式再平衡回路,使得该微型光纤加速度传感器和一般的光纤传感器相比,又具有动、静态性能较好,精度、稳定性较高等优点。 |
| 8. | Based on local coupling mode theory of graded index optic fiber wave guide , the variation regularity of coupling output light has been deduced when sound wave acts on single mode optic fiber coupler . and a new idea has been proposed that a novel sensor can be applied on detection of acoustic / vibration . the sensing element of sensor is the melting area of single mode coupler in which the feasibility of the new - type optic fiber sensor has been proved in experiment 本文从缓变光纤波导的局部耦合模理论出发,推导出了单模光纤耦合器耦合分光在声波作用下的变化规律,提出了以单模光纤耦合器的熔融区为传感元件的传感器在声振动信号检测中应用的新思想,并实验论证了这种新型光纤传感器应用于实际的可行性。 |
| 9. | According to the research results of the rock quality calculation , the columnar section digitlizing , the rock mass structure diagnosis and other methods this paper used engineering limited parameters , basic structure and evolutionary structure of rock mass as the first grade indexes , proposed the technique of dynamic engineering classification of stability of mine road surrounding rock mass ? dec ? , pointed out the method of using dec results 基于围岩质量计算、柱状图数字化与重组、围岩结构诊断、采动应力作用后围岩结构演化等研究成果,采用工程要求、基本结构、演化结构”为一级指标,提出了巷道围岩稳定性动态工程分类技术、分类结构的表达技术及分类结果的应用方法 |
| 10. | Because of the digitally rebalanced circuit , the sensor is capable of achieving better static and dynamic characteristic , higher sensitivity and stability . in this paper , the propagation path of light in the step index fiber and graded index fiber is introduced firstly . then the paper sets up the coupled power model and develops the coupling function 在文中,首先介绍了光线在阶跃型光纤和梯度折射型光纤中的传播路径,以及在一端镀有反射膜的1 4波节长度的grin透镜中的成像规律,并推导了光功率耦合函数。 |