微系统

Meanwhile , based on the AT89C51 microcontroller, the systemare made up of the double-Level capacitive sensor , the detection circuit of sensor signals, CPU and display circuits, alarm circuits and system software.

同时该系统以AT89C51单片机为微控制器，由双电容式料位传感器、传感器信号检测电路，CPU及显示电路、报警电路和系统软件等构成。

Introduced are specialities,structures and parameters of some newly developed well logging tools used by eminent well logging companies in the past few years,such as the new 3-D electrode-type logging tool,the new asymmetrical array induction logging tool,the new micro-resistivity pad tool,the oil-based mud imaging tool,the novel through-casing resistivity tool,the formation tester with an oval pad,the ArmadaTM sampling system and the ConneX perforating system.

介绍了国外测井公司近年来推出的电缆测井新技术以及新型或改进型测井仪器的特点、结构组成及工作参数。主要包括：新型3D电极电阻率测井仪器、新型阵列感应测井仪器、新型微电阻率极板仪器、油基泥浆成像仪器、低污染流体采样技术、新一代油管传送流体采样系统、具有椭圆形极板的地层压力测试仪器和ConneX射孔系统。

The maximum principle of the optimal control for the stochastic systems described by Zakaj stochastic partial sifferential equationis proved by approximately minimum point theorem of E. Ekeland. The convexity and compactness of the set of control values is not assumed, and it is not necessary for the maximum principle about differentiability in control variables included in drift term of the stoch astic system and the integrand in index functional, and costate process satisfies the stochastic partial ...

在不假便定控制变量取值的集合是凸的和紧的，不要求随机系统的漂移项和指标泛函的被积函数关于控制变量具有可微性的情况下，用E，Ekeland的近似极小点定理证明了Zakai随机偏微分方程描述的随机系统的最优控制的最大值原理，和用很简洁的方法证明了协态过程满足一个随机偏微分方程。

In this paper, it is introduced first the SPI module in Cygnal's microcontroller C8051F020, including its block diagram, definition and operation of configuration registers associated. Then the external pinouts, division of memory space and corresponding software commands of Atmel's SPI flash memory AT45DB081B are described in detail.

引 言C80 5 1F是Cygnal公司的8位片上系统型单片机系列，采用该公司的CIP 5 1微控制器内核，即在原有的80 5 1内核基础上，根据不同的应用场合增加相应的智能外设及接口，使得应用系统整个控制电路部分的设计开发变得简便迅捷，稳定性和可靠性大大提高。C80 5 1F0 2 0是该系列中功能较强、内部集成资源相当丰富的一款。

Coolant Through Spindle with micro filter system, spindle pump and all the necessary plumbing.

通过主轴中心冷却系统包括微过滤系统，增压泵及所有必需的连接管材。

In the initial stage, there is little ice particles, and the rain water form mainly through the collection of cloud water and auto-conversion process. In the growing and mature stage, both the cold and warm rain processes are important. The collections of rain water and graupel with cloud water and the melting of graupel are very important to the rain water. Graupel grows mainly through riming cloud water and colleting snow.

在上述成功模拟的基础上，又对γ中尺度对流系统作了探讨发现，γ中尺度对流系统在不同发展阶段的微物理机制不同：初生阶段时，冰相粒子含量较少，雨水的增长以暖雨过程为主，即依赖碰并云滴和云雨自动转化形成；发展和成熟阶段时，冷雨和暖雨过程并存，雨、霰碰并云水和霰的融化对雨水的形成非常重要，霰主要通过淞附和霰碰并雪增长，雪主要通过淞附增长。

The problem would be generalized in view of the gyre ecosystem to judge the micro ecosystem for the deep lake eutrophication.

对于以涡流生态系统的见解判断微生态系统的深水湖富营养化问题将给予概括。

As a deep lake to compare with Fuxian Lake situation, a Japanese deep lake and its current system are briefly introduced, in which, the gyre current and its micro ecosystem are deeply related each other.

为了与深水的抚仙湖状况进行比较，简略介绍了一个日本的深湖及其径流系统。其中，涡流和它的微生态系统，在两者中相关性很好。

Use the Rogowski coil as the sensor and transmit the signal and energy with the optic fibre, analyse the principle of the measurement of harmonic current in HVDC system and the factors of its measurement of influence by opticelectricity and computer technology. The Rogowski coil is used to measure the harmonic current in HVDC system. It doesnot affect by direct current and has good frequency characteristics.

本文在全面分析高压直流谐波电流测量方法的基础上，确定以空心线圈为传感器，以光纤传输信号和能量，结合光电技术、微计算机技术，系统地分析了谐波电流测量系统的工作原理及影响其测量的多种因素，提出了解决问题的具体方法和措施。

The system uses temperature and humidity sensor SHT11 and smoke sensor MQ-N5 to collect data. SHT11 is a digital sensor with highly integrated inner system and anti-jamming capacity, which makes the collected signal more precise. The integrated I2C bus interface is a sensor, which can directly connect with any type of microprocessor and microcontroller system, it is very simple and practical.

本系统采用温湿度传感器SHT11和烟雾传感器MQ-N5来采集数据，SHT11是个数字传感器，内部高度集成，抗干扰性能，使采集的信号更准确，集成的I2C总线接口能是传感器可直接通过I2C总线与任何类型的微处理器、微控制器系统连接，十分简单实用。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。