The litter - resistance slowly closing butterfly check valve is developed a newest product based on our butterfly check valve, hydra - matic transmission to be add in the valve with unique design, new stuction and optimum performance, can be used pipeline of water supply and dring with such media : fresh water, sea water, sewage, raw water, ect. the valve should be installed at outlet of the water pump, in stapping the pump, the process of slowly closing after valve plate shuts rapidly. can be guard effectively against the destruction water hummer, so to ensure the safe operation of the pipline
微
阻緩閉蝶式止回閥是在我廠生產的蝶式雙瓣止回閥的基礎上利用能量轉換原理增設油
壓緩閉裝置的新型模式止回閥，設計獨特，結構新穎，性能優宜，適用於凈水，源水，污水，海水等介質的供、排水管路中，安裝於水泵出口端，停泵時由於油
壓阻尼作用法盤先速閉后緩閉，以消除破壞性水錘，保證灌路安全運行。
Accelerometer is used widely for measuring acceleration in civil and military field. at present, there are several type of accelerometers such as piezoelectricity electric charge accelerometer, ic piezoelectricity electric accelerometer, compressive resistance accelerometer and alteration capacitance accelerometer. the main part in alteration capacitance accelerometer is capacitance measurement circuit. foreign countries have produced accelerometer that have tiny volume and high performance. however, our country is not able to produce such accelerometer due to the lack of technique
加速度計作為一種測量加速度的儀器，在民用、軍用領域都有廣泛的應用。目前市場上的加速度計主要有
壓電式電荷加速度計、集成電路式
壓電加速度計、
壓阻式加速度計、變電容式加速度計等幾種類型的加速度計。變電容式加速度計的設計中一個重要的環節就是電容檢測電路的設計。
The voltage of lithium - intercalation reaction, impedance and structural stability of intercalation - type cathode material were analysed and calculated. theoritical results show that the reaction voltage depends on the content of lithium and the bond energy, and that the key ways to lower the electrode impedance are to increase the electronic conductivity of the electrode and the diffusion coefficient of lithium ion in the host and to decrease the size of powder. in addition, the thermal stability of lithium - insertion structure can be improved by using crystallographic co - lattice theory and doping treatment
本文從嵌入式陰極材料的嵌鋰反應的電
壓、
阻抗及結構穩定性的分析和理論計算著手，得到了電
壓取決于基體中各種離子間的鍵能及鋰含量、降低電極
阻抗的關鍵是提高電子型導電性和li ~ +在基體中的擴散系數及減小粉末粒度的理論依據及其利用晶體的共格原理和摻雜改性的方式來提高材料嵌鋰結構的熱穩定性的設計思路。
Performance for a piezoresistive transducer pressure sensor to thermal and pressure environments can be predicted by finite element method. a simplified 1 / 8 model, considering silicon dioxide and nitride process as well as stack anodic bonding and adhesive bonding processes, was developed. the fem results were found to be comparable to experimental data. case studies suggested that pyrex stack induces certain amount of non - linearity, while it isolates hard epoxy nonlinear effect. flexible epoxy bonding or soft adhesive bonding is preferred to the packaging process. the viscoelasticity and viscoplasticity of bonding material will result in hysteresis and drift errors to sensor output. however, soft adhesive s influence on sensor can be ignored under relative stable environments. more over, detailed design and process information will help to improve modeling application
熱、
壓環境下
壓阻變換
壓力傳感器的性能可以通過有限元方法預測.這里研究了簡化的1 / 8模型，模型考慮了二氧化硅和氮化硅生成過程及堆陽極鍵合和膠粘結合過程.結果發現有限元預測結果和實驗數據具有可比性.範例研究表明，硼硅堆導致產生一定的非線性，但它隔離了硬環氧樹脂的非線性.在包裝過程中最好使用柔性環氧黏合或軟黏膠性結合.黏合材料的黏彈性和黏塑性將會導致傳感器輸出的滯后和漂移誤差.然而，在相對穩定的環境下，軟黏合劑對傳感器的影響可以忽略.此外，詳細的設計和過程信息有助於提高模型的適用性
Diameter - dependent piezoresistive effect of multi - walled carbon nanotube films
管徑相關的多壁碳納米管膜的
壓阻效應
Using piezoresistive accelerometers and magnetoresistance sensors measure the dynamic acceleration and geomagnetic field and through avr mcu software to calculate the attitude angular and azimuth. the fact of affecting the module is discussed in detail in this report and put forward the resolving scheme of key technology of digital filter, linear compensation, temperature compensation and magnetic field adjustment. the digital module has advantages of small size, light weight, low conception, high accuracy, all solid state and high reliability
本課題採用
壓阻式加速度計和磁
阻傳感器分別測量重力加速度和地磁場，通過avrmcu軟體解算出姿態角和方位角，課題詳細分析了影響模塊性能指標的因素，就數字濾波、線性補償、溫度補償、磁場修正等關鍵的技術問題提出了可行的解決方案，研製的數字化模塊具有體積小、重量輕、低功耗、精度高、全固態、高可靠等特點，所有性能指標均滿足設計要求，為姿態角測量提供了有效的手段。
It can optimize the process of piezoresistive sensor calibration and compensation, then, a total error factor within 0. 2 % of the sensor s repeatability errors is obtained
通過該晶元的補償，可以使硅
壓阻式傳感器的重復性誤差小於0 . 2 % 。
Detail specification of shock and vibration piezoresistive acceleration sensors for type ca - yz - 001
Ca - yz - 001型
壓阻式沖擊振動加速度傳感器詳細規范
Consisting of blowers, air ducts, rescue stations and other auxiliary equipment, the mobile pneumatic emergency rescue device is a new - style firefighting emergency rescue equipment targeting at metro fires, with the working principle of adopting mechanical ventilation to create positive pressure so as to prevent the outside smoke entering, thus setting up a temporary smokeless secure place in the smoking accident site
摘要可移動充氣式應急救護裝置是一種重點針對地鐵火災的新型消防搶險救援裝備，主要由風機、風管、救護站及其他輔助設備組成，其工作原理是採用機械通風的方式在救護站內建立正
壓，
阻止外界煙氣進入，從而在充滿煙氣的事故現場建立一個沒有煙氣的臨時安全場所。
The expression can be used in calculation for relationships of the input voltage, output voltage and device geometry parameter
用漸近解的分析方法對所求到的解進行簡化，導出了硅橫向
壓阻效應四端
壓力傳感器的輸出電
壓表達式。
In chapter 3, the mechanism, static and dynamic characters of the piezoresistive accelerometer with the double thin plates - mass. and the simulation of ansys was used for the optimal design of this sensor and obtained the parameters of the structure
第三章詳細論述了具有雙薄板梁島結構的
壓阻式加速度傳感器晶元的工作原理、分析了器件的靜態、動態特性，用ansys模擬並進行了優化設計，在此基礎上確定了傳感器的結構參數。
Piezoresistive effect of polysilicon films at high temperature
多晶硅薄膜的高溫
壓阻效應
Piezo - resistance effect
壓阻效應
( 7 ) the influence of mechano - electric effect of cfrc on piezoresistivity can be ignored
碳纖維混凝土的力電效應對
壓阻效應的影響不大。
Structure characteristics and piezo - resistance effect in hydrogenated nanocrystalline silicon films
摻磷納米硅薄膜電導及壓阻效應的研究
