塵度計 的英文怎麼說
中文拼音 [chéndùjì]
塵度計
英文
dust counter-
Numerical simulation results indicate that, for low temperature dust particles, dust particles mainly exist in the area near the column center and their charge - number can be considered as a constant, while in the area where there are no dust particles, ion and electrons are in ambipolar diffusion ; for high temperature dust particles, both the distribution regions of dust particle and high ion density are expanded and dust charge - number is increasing with the distance from the center
計算結果表明：當塵埃粒子的溫度較低時，塵埃粒子主要集中在圓柱形放電器的中心很小的區域，塵埃粒子攜帶的電荷幾乎是一個常數，受塵埃粒子空間電荷的影響，離子在該區域的密度最高。在遠離中心區域，離子和電子呈現雙及擴散特點；當塵埃粒子的溫度較高時，塵埃粒子分佈的區域和高離子密度區域擴大，塵埃粒子離放電器中心越遠，攜帶的負電荷越多。Based on the spectral irradiance measured with the sun - atmosphere ultraviolet spectrum radiometer ( sauvs ) developed by the institute of atmosphere physics and the changchun institute of optics and fine mechanics, chinese academy of sciences, measuring the direct and scatter irradiance spectrum of ultraviolet waveband which arrives in beijing global surface, giving a method of retrieving the aerosol optical depth ( aod ) and put up with primary results that exponential function can fit the retrieval results according to its visibility, putting forth different coefficients and functions on variable visibility, also giving a primary analysis on the aod in dust - storm day and some contrast between sun - day and dust - storm day, analyzing the ratio between scatter and total irradiance, and its relationship with atmosphere mass and total atmosphere optical depth, lastly contrasting with the survey results by aeronet beijing station, the results of retrieval is in reason, this work gives some help in researching the co - effect of aerosol - radiance - climate and makes preparation for further survey on the radiance characteristics of dust
利用中國科學院大氣物理研究所與長春光學精密機械研究所合作研製的太陽?大氣紫外光譜輻射計（ sauvs ） ，測量到達北京地表的太陽直接和散射紫外光譜輻射，導出了大氣氣溶膠的光學厚度。初步結果表明：北京紫外波段大氣氣溶膠的光學厚度在絕大部分情況下隨波長的增加而單調減小，用指數函數可以較好地擬合反演結果，統計得到了三個水平能見度狀況下擬合函數的系數值和公式表達式；初步分析了揚沙、浮塵、沙塵暴天氣條件下氣溶膠光學厚度的特點，並與一般晴朗天氣條件下的氣溶膠光學厚度特點做了比較分析；分析了太陽紫外譜輻射中散射輻射與大氣質量、大氣總光學厚度的定性關系和定量表達式；最後與全球氣溶膠監測網路（ aeronet ）北京站的資料做比對，表明反演結果基本合理。Methods for testing the performance of dust particle counter - particle concentration
塵埃粒子計數器性能試驗方法顆粒數濃度Methods for testing the performance of dust particle counter - calibration for sizing particle
塵埃粒子計數器性能試驗方法轉換靈敏度To investigate the space / time distributions and occurrence and evolution of such events, the diffusion pattern over deserts, turbulent transfer features in sandstorm weather, the particle size distribution, mass concentration and its distribution, optic properties, chemical composition and physical factors responsible for the initiation of raising sands, we made integrative observation and sounding of sandstorms deep in the large - scale desert area, including tengri, badanjilin and maowusu, with the items consisting of micrometeorological measurement, 3d wind observation, data from kb - 120 and anderson samplers of mass concentrations of sands with their spectrum, the distribution of aerodynamic particle sizes from the aps3310a, retrieval of aerosols " optic depth from sunphotometer data, assay of the chemical composition by means of neutron activiation analysis ( naa ) and integrated study of all related factors for causing sandstorm to occur, based on the observations of all kinds
利用所取資料，系統分析了不同強度沙塵天氣條件下沙塵氣溶膠質量濃度和質量濃度譜、粒子譜分佈、光學厚度、化學組分等特徵；綜合分析了影響沙塵起動的諸物理因子在沙塵起動中的作用；用沙塵輸送模式對一次沙塵暴天氣造成的泥雨過程的形成機制進行了模擬。歷史氣象資料統計分析表明，沙塵暴有其高發期（ 4 、 5月）和高發時段（ 14 - 20時） ， 14時到20時之間發生的沙塵暴約占沙塵暴總次數的66 。揚沙和沙塵暴天氣條件下，湍流動量通量和湍流感熱通量都是重要的湍流交換，沙塵暴發生前近地層的超絕熱不穩定對沙塵暴天氣有加強作用。Supply of transducers measuring electric current from less than an amp to several million amps. describes the theory and applications of these devices
-從事水分活度測量儀，溫濕度傳感器，溫濕度巡測儀，塵埃粒子計數器的研發生產。Torng, chau - chen, 1992, economic statistical design of variables control charts, ph. d. dissertation, arizona state university
童超塵， 1996 ，資料相關性對統計製程管制方法之敏感度分析，國科會專題研究計畫報告Specially designed for the cylinder of the carding machine, fsm model motor is suitable for big rotating inertia and long staring time under the working conditions of plentiful dust, short fibers, high temperature and high humidity
本型電動機專為梳棉機錫林（大滾筒）配套設計，主要適用於轉動慣大、起動時間要求長、多塵埃、短纖維、溫濕度較高的條件下工作。They are designed to be inexpensive enough for deployment in large numbers to gather very detailed information about the environment
為了能夠大量使用，以?集極度詳細的環境資訊，研究人員把塵粒設計得相當便宜。Then we also presented the simple way to solve the polydisperse powder concentration by calculate it as monodisperse powder, compared the measurement results which were got at different diameter, scattering angle and distribution
然後本文還分析了將具有尺寸分佈塵粒的濃度測量按單一粒徑塵粒進行近似測量的計算情況，並比較了它們在不同粒度、不同測量角度、不同分佈參數情況下的差異。The traditional level measuring methods can n ' t meet our demand because the subjective investigated is in such a poor systemic condition that the temperature is a little high and there ' s so many mill dust and steam there. in this article we perform systemic discuss and research against the dynamic level measuring method under special working condition on the basis of analyzing kinds of level measuring technique in and abroad. first we establish the pressure distribution mathematic model in storage bin and then deduce the mathematic relation between level height and the uniform stress on the bottom of the bin and designed a resistance compressive stress sensor used for the special condition and put forward a resoivement according to its zero excursion existing in practical use
由於本研究系統被測對象環境溫度較高且潮濕，同時料倉中有大量粉塵及蒸汽，因此傳統的料位檢測方法不能滿足本測試要求。本文在分析國內外各種物位檢測技術的基礎上，針對特殊工況下動態物料高度的檢測進行了系統的探討與研究。首先建立了料倉中的壓力分佈數學模型，推導出料位高度與倉底均布壓力間的數學關系式，並據此設計了中溫電阻應變式壓力傳感器，同時對它在實際應用中存在的零點漂移等問題提出了改進措施，提高了傳感器性能，解決了上述特殊工況下動態物料檢測的技術難題。This machine also equipped with pneumatic bag - clamping device and dust collect system
適宜於要求計量精度高又易揚塵的粉狀物料的稱量分裝。This method overcomes the problem of low metering accuracy of vertical auger
克服了立式螺旋計量精度不高的難題，並配有夾袋裝置和吸塵回收箱。Meanwhile, this scale is used platform structure, which offers solid structure and can bear the overload
特殊設計的回氣裝置使得現場干凈，粉塵少，保證計量精度。Air quality. stationary source emission. determination of dust concentration by opacimetry with reflected light
空氣質量.固定源輻射.用反射光不透明計測定灰塵濃度Hitting at 2 kilometers per second, the impact of the smart - 1 spacecraft was expected to leave a 3 - meter - by - 10 - meter crater and send dust kilometers above the surface
按照此速度，這次撞擊預計會在月球表面留下一個直徑3米深10米的坑，而且會在月面激起幾公里高的塵埃。In order to clarify the problem, the theoretical equation of vande waals force, adhesive force and electrostatic force between particles from microcosmic aspect are derived by setting up a mathematical model in thesis
通過建立數學模型從微觀的角度推導出粉塵之間各種粘結力的理論計算公式。The design of flexible air inlet, advanced air flow even arrangement and pre - dedusting device satisfies different process arrangement and treats air with different dust density
靈活的進氣方式和先進的氣流均布裝置及預收塵裝置的設計，使設備可以滿足不同的工藝布局，處理不同含塵濃度的氣體。With high mechanical indexes, jfo3 series motor is of enclosed, self - cooling type, suitable for textile machines of cotton, wool, linen and silk in the working conditions of plentiful dust, short fibers, high temperature and high humidity. its two - speed motor is purposely designed for the spinning machine
本系列電動機為封閉自扇冷式，具有較高的力能指標，適用於棉、毛、麻、絲等紡織機械，適宜在多塵埃、短纖維、溫濕度較高的環境中工作，其雙速電動機主要為細紗機設計配套。Based on such background this system brings forward microcomputer monitoring and controlling technique to pvc process in production, researches ipc - plc distributed control system, applies new algorithm of measurement, realizes automatic compensation of dropping of material and automatic amendment of high - speed measurement in the dynamic measurement, improves dynamic measurement precision and speed in pvc continual production. at the same time, this system accomplishes the whole process in airtight pipelines and storehouses, realizes dustless production, clean producing condition, automation, scientific management, meets the demand of modern production, makes some new exploration and creation in production of pvc industry
基於這樣的背景，本論文對pvc塑料生產的整個工序提出計算機監控技術，研製出ipc - plcdcs系統，運用一定的給料演算法，實現系統動態稱量中落差的自動補償與粗流給料設定值的自動修正，提高了pvc連續生產中動態稱量的精度與速度，並將整個生產工藝規劃於密閉管路和各種料倉中進行，實現作業無塵化、環境優化、生產自動化與管理科學化，適應當前現代化生產的需求，為pvc塑料工業的發展作出新的探索與創新。分享友人