The development of MEMS optical switches including electromagnetism driven mobile micro-switch, electrostatic driven optical switch, optical switch matrix of MEMS optical amplifying and spray-ink air bladder MEMS optical swith, wavelength selective switch, both at home and aboard is reviewed, and the structures, performances and fabrications of these components are analyzed.

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In this paper, the bump patterns for flip-chip packages are discussed first, then an experiment is setup to study the dispensing phenomena for different bump patterns, and the CAE software is used to analyze and identify with experiment mutually. From these thorough comparisons and analytical analysis, the existence of channel could slow down the flow, the high density of bump could speed up the flow, and it could avoid the air trap by modified the bump and channel's arrangement on flip-chip package. Then flows in rectangular microchannels driven by capillary force and gravity are discussed; furthermore, the theoretical model of flow in microchannel driven by capillary force and gravity is formulated from the Navier-Stokes equations.

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Through functional analysis, the design of a stepper motor as the executing agency of the power source, through the stepper motor to drive the clutch of positive and have positive and negative-driven torque, the use of Extraction change for the stepper motor torque output , The use of torque sensors and angular displacement sensors to measure vehicle-borne by the driven clutch of torque.

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One of the electric field sensing transmission electrodes (36) is driven with an alternating voltage (130) comprising at least some antiphase portions, for example an inverted signal, in comparison to an alternating voltage (120) with which the other electric field sensing transmission electrode (34) is driven.

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The design of the device using NC Lathe CA6240 control, part of the main transmission system using AC spindle motor and graded by the pulley driven spindle gearbox, through the inverter and gearbox to achieve sub; Feed System used by stepper motor driven ball screw slowdown after campaign vertical feed system through a gear after the ball screw drive, in the horizontal feed system through two gear-driven ball screw; Tool to automatically transfer tool carrier (4-position), thus achieving automatic tool change; by MCS-51 series 8051 data to be dealt with.

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A transmission for vehicles is provided with a plurality of drive gears, an input shaft connected to the drive shaft of an engine, an output shaft disposed parallel to the input shaft, a driven gear which meshes with each drive gear and is rotatably disposed on the output shaft, a synchromesh mechanism which has a sleeve movable in the axial direction of the output shaft, is engageable with a side portion of the driven gear, and couples the driven gear to the output shaft, and a parking gear formed integrally with the sleeve of the synchromesh mechanism.

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The unfeasibility of discrete event driven simulation for high-speed network is discussed; two simulation algorithm based on time driven simulation are given, one of which is as precise as that based on discrete event simulation, but is faster, and the other gets less precision, but is much faster than the former. Comparing with the algorithm based on time driven fluid simulation, both of the proposed algorithms support the succeeding simulation for high-level protocol.

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Subcontract-driven industry of east China has been pushed in unprecedented predicament. In this paper, it is thought that root cause of present predicament is the defect of the export-oriented subcontract industry itself, which is leeched on producers-driven and buyers-driven mode dominated by TNCs and international big buyers.

內(nèi)容提要東部地區(qū)產(chǎn)業(yè)困境的根本原因在于出口導(dǎo)向型代工產(chǎn)業(yè)模式自身缺陷--嚴(yán)重依附于跨國(guó)公司和國(guó)際大買(mǎi)家的生產(chǎn)者驅(qū)動(dòng)和購(gòu)買(mǎi)者驅(qū)動(dòng)，所以91精品国产91热久久久久福利，金融危機(jī)只不過(guò)是一個(gè)&放大器&人人插人人操人人摸。

In order to compare the performance of electric-driven compression type refrigerating machine and steam-driven lithium bromide absorption machine,defines a modified performance coefficient—equivalent performance coefficient based on the analysis of existing indices for electric-driven compression type refrigerating machines.

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