The environmental pollution, material recycling aspect and so on use, worker's health and security frequently can attach the new limiting condition to the choice of material. 环境污染、材料的回收利用、工人的健康及安全等方面经常会对材料选择附加新的限制条件。
Results show that the porphyrin derivative has a large nonlinear absorption coefficient, which has potential applications as novel optical power limiting material. 研究表明,该卟啉化合物在较宽的光谱范围内具有大的非线性吸收系数,是一种具有潜在应用价值的新型光限幅材料。
The limiting load of thick cylinder and thick sphere in strength-differential material 拉压异性材料厚壁圆筒和厚壁球壳的极限载荷分析
Coulomb yield-law is used to determine elastic and plastic limiting load of thick cylinder and thick sphere in strength-differential material. 本文利用库仑屈服准则,研究了拉压异性材料厚壁圆筒和厚壁球壳的弹性极限载荷和塑性极限载荷,得出了新的结果和结论。
The conclusion as follows: the cracking load, yielding load, and limiting load are improved after reinforcing by sheet material and among them the improvement of limit loads is the most remarkable; 粘贴片材后,梁的开裂荷载、屈服荷载及极限荷载均有所提高,其中极限荷载提高最为显著;
Materials processing and characterization are limiting factors of whether the material can be widely applicable. 材料制备工艺及测试方法是制约材料能否得到广泛应用的重要因素;
This paper introduced a new current limiting element PTC that is a positive temperature coefficient resistivity material. Combining with conventional circuit breaker, PTC can convert most of the interruption energy into thermal energy and greatly raises the breaking capacity of the circuit breakers. 本文介绍一种新型的PTC限流元件,它与传统断路器组合后,能吸收大部分的分断能量,从而大大提高断路器的分断能力。
In this paper, some mechanisms, performances for optical limiting, new studying progresses of C 60 are introduced and the application of C 60 as an optical limiter material in future is discussed. 本文就C60的光限机制、特性、最新研究进展及应用前景作一概述。
The main factors limiting potential exploiting in acquisition of second language prove to be subjective EQ of the students, teacher-oriented strategies and the input of the unqualified language material. 学生主观方面的情商、传统教学模式、非经典性语言材料的输入是制约二语英语习得潜力发挥的主要因素。
However, as a result of limiting of cost or material etc, updating of equipment of network inexistence can't follow demands of users to use network. 然而,由于成本、材料等方面的限制,使现有网络设备的更新速度无法跟上使用者对网络的需求。
The results show that the limiting tensile strength and the grade of leakage-resistant, especially at the age of 28 d, control the selection of parameters in RCC design, and that the gel material content of the RCC has significant effect to the adiabatic rise of temperature. 结果表明,极限拉伸值和抗渗标号,尤其是28d龄期,对碾压混凝土的配合比参数的选择起控制作用,胶凝材料用量对混凝土的绝热温升有较大影响。
The research on the nonlinear optical properties and the optical limiting characteristics of the laser protection material provides the theoretical and experimental bases for preparing the much better optical limiting material. 以此为基础,研究了激光防护材料的非线性光学特性和光限幅特性,为制备光限幅材料提供了理论和实验依据。
Understanding and utilizing the limiting factors of the material promote the development of science and technology. Understanding and utilizing the limiting factors of the society promote to reflect on institution and cultural and religion, and improve and develop society knowledge. 对物质约束条件的认识和利用体现为自然科学和技术的发展,对社会约束条件的认识体现为对制度、文化及宗教等众多人文社科因素的反思和发展。
As laser protective materials, nowadays, the best performance, close to the practical use of the optical limiting material is based on the nonlinear principle of reverse saturable absorption. 作为激光防护材料,目前国内外研究最多,性能最好,接近实用化的光限幅材料是基于非线性反饱和吸收原理。
Therefore, we should focus on controlling the investment of engineering change, limiting work visas, strengthening of material supplied by management. 因此,施工阶段投资控制的工作重点放在控制工程变更、限制工程签证、加强甲供材料管理等。
Diamond is a representative production of superhard materials. It is a limiting functional material with many exceptional physical and chemical properties. 金刚石是超硬材料的代表性产品,具有许多优越的物理、化学性质,是一种极限功能材料。
Experimental results indicate silver nanowires have obvious optical limiting properties. It provides a reference for laser protective materials and for looking for good new material that can protect eyes from the laser damage. 研究表明,金属Ag纳米线具有很好的光限幅性能,这为寻找一种保护眼睛免受激光伤害效果很好的新型材料和为研究激光防护材料提供参考。
Current photonic crystal optical limiting material is still in the stage of theoretical research. 当前光子晶体光限幅材料还处于理论研究阶段。