微系统

The method has been used to determine Phthalic esters in drinking water and seawater sample. 3. Single drop microextraction, followed by gas chromatography with flame ionization detection has been applied to determine Formaldehyde, Acetaldehyde and Acraldehyde in water based on 2,4-Dinitrophenylhydrazine derivatization. Extraction solvent, extraction time and stirrer speed were optimized. Optimal experimental conditions were as follows: 1.6μL toluene microdrop exposed for 30 min in a 3ml aqueous sample placed in 4ml vial and stirred at 600 rpm/min.

以2，4-二硝基苯肼衍生，单滴液相微萃取与气相色谱火焰光度检测器联用测定水样中的甲醛、乙醛、丙烯醛，考察了萃取溶剂、液滴大小、萃取时间、搅拌速度、盐效应等对该方法的影响，并对影响液相微萃取的各种因素进行了系统的阐述，确定了该体系的最佳实验条件，实现了甲醛、乙醛、丙烯醛的提取和富集。

The main difference is that a microcontroller is designed specifically for use in embedded systems Microcontrollers typically include a CPU, memory (a small amount of RAM andor ROM), and other peripherals on the same chip.

主要的差别在于微控制器被特殊设计用在嵌入式系统中。微控制器典型地包括CPU、内存，还有其他的外设，它们在同一块芯片上。

The effect of Profenofos on GPx activities and on the co ntents of GSH and CAR in Phaeodactylum tricornutum and Platymonas helgolan dica were studied. The results indicate that the GPx activities of two species of microalgae declined, and the contents of glutathione and carotinoid of algal c ells decreased under high concentration of Profenofos.

摘 要 实验以三角褐指藻和青岛大扁藻为材料，进行了丙溴磷农药对海洋微藻的抗氧化防御系统成份— GPx 活性和GSH、CAR含量的影响研究，结果表明，在丙溴磷胁迫下，微藻的GPx活性呈现下降趋势，GSH和CAR含量也表现为下降趋势，并且胁迫的时间越长、胁迫的强度越大它们下降的幅度也越大。

In present study, we discussed the effects of cell microfilament on the activity of collagen type I alpha 1 chain gene (COL1A1) promoter under microgravity simulated by clinostat and/or cytochalasin B as microfilament depolymerizer in the established EGFP-ROS cell line using the method of fluorescence semi-quantitative analysis and the fluorescent stain of microfilament.

但微重力对相关基因调控的影响知之甚少，本研究以构建的基因工程细胞株为对象，以回转器模拟微重力效应，利用增强型绿色荧光蛋白（enhanced green fluorescence protein，EGFP）荧光半定量和细胞微丝荧光染色分析技术，探讨回转模拟微重力条件下，细胞微丝系统对I型胶原α1链基因（collagen type I alpha chain 1，COL1A1）启动子活性的影响。

In present study, we discussed the effects of cell microfilament on the activity of collagen type I alpha 1 chain gene ( COL1A1) promoter under microgravity simulated by clinostat and/or cytochalasin B as microfilament depolymerizer in the established EGFP-ROS cell line using the method of fluorescence semi-quantitative analysis and the fluorescent stain of microfilament.

本研究以构建的基因工程细胞株为对象，以回转器模拟微重力效应，利用增强型绿色荧光蛋白(enhanced green fluorescence protein，EGFP)荧光半定量和细胞微丝荧光染色分析技术，探讨回转模拟微重力条件下，细胞微丝系统对I型胶原a1链基因(collagen type I alpha chain 1 gene， COL1A1)启动子活性的影响。

But ECT technology has the following characteristics: 1 the measured capacitance and its change induced by the measured material concentration variation are very small, but the stray capacitances of co-axial screening cable and CMOS switches are relative very large, so the capacitance detecting is easily affected by the stray capacitances, 2 the electric fields in the sensors detecting region is affected by the permittivity distribution, non-uniformity of the space responsive sensitivity is very high, and the image reconstruction is undetermined.

但由于ECT技术中，首先所检测的微电容量及其因物流相含率的变化所引起的变化量很小，而由相关的连接同轴屏蔽电缆与切换CMOS开关所引入的杂散电容远远大于测量电容，微电容的测量容易受杂散电容等的影响；其次，多电极电容传感器测量区内的电场受介质分布的影响，且测量区内的空间响应灵敏度极不均衡，其影响图像重建的不确定性；其三，ECT中的图像重建，由于其是一个欠定问题的求解，在迭代求解方法中，迭代的初值影响迭代过程收敛到近似解的速度；其四，对于气/固两相流应用而言，由于ECT系统在线标定的难以实现，管壁磨损等因素的影响制约该技术应用于生产工艺中气/固两相流的长期连续检测。

With the manipulator, which consists of three joints and three links and operates in a horizontal plane, the index υ is verified and used for evaluation the effect of the friction in several different parameters by simulation.

有限刚体运动系统和微振动系统是最常见的有限自由度动力学系统，它们的运动规律有原则上的区别，摩擦力对这两类系统运动的影响究竟有何区别，是值得探讨的问题。

Advanced manufacturing technology and equipment, extreme manufacturing technology and equipment: MEMS and MOMES, Super-deep processing tools and equipment, FMC and FMS, Computer Integrated Manufacturing Systems, Digital Control Technology and equipment, Manufacturing technologies for Mechanism basic conponents, clean production and processing technology and equipment and large-scale traffic foundation construction equipment,etc.

先进制造技术及设备极端制造技术及设备：微机械系统和微光机械系统、超深加工工具及设备、柔性制造单元和柔性制造系统、计算机集成制造系统、数控技术和装备、机械基础件制造技术、清洁化生产加工技术及设备、大型交通基础施工设备等。

Nowadays, the development of computer graphics systems tends towards features with much higher quality and high speed . Super-microcomputer system with uni-processor could no longer afford the processing capability in these high-end graphics technology fields. By using supermini even mainframe computer would be too expensive. All these factors limit the new application field of computer graphics.

在目前，计算机图形系统向着高质量和高速度发展过程中，由单处理机组成的超级微计算机系统已不能满足图形技术某些领域对处理能力的需求，而用中、小型以致于大型机实现的图形系统成本高，限制了图形系统的应用。

At the same time, based on numerical simulation, the method of determining the appropriate emitter discharge was proposed for drip irrigation system.

为了提高微压滴灌系统的设计精度，保证系统的灌溉质量，研究了滴灌系统技术参数对系统灌溉质量的影响，初。。。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。