號主泵 的英文怎麼說
中文拼音 [háozhǔbèng]
號主泵
英文
run no. and no. main pumps simultaneously-
Secondly, it is numerically simulated how a dark pump beam induces a bright probe beam ( with the gaussian profile spatially ) to focus in two - and three - dimensional self - defocusing media, and the main factors that have influence on the focusing of the probe beam are also analyzed
二、研究了具有暗光束分佈的泵浦光與基模高斯型信號光在二維和三維自散焦介質中同向共同傳輸時的誘導聚焦現象，分析了影響聚焦過程的主要因素。In this paper, some investigation and design as following. have been carried out on er - yb codoped phosphate glass waveguide laser first, three primary performance parameters of er - yb waveguide laser pump threshold power ; output power and slope efficiency have been commulated and analysed theoretically based on er ~ ( 3 + ) - yb ~ ( 3 + ) energy configuration ; rate equation of stable state and transmitting equation. the influences of er - yb ions concentration ; enabled waveguide length ; light dot radius of signal light and pump light ; reflectivity of output lens on three above parameters have been researched
首先，從er ~ （ 3 + ） - yb ~ （ 3 + ）能級結構出發，結合激光穩態速率方程與傳輸方程，對鉺鐿波導激光器的三個主要性能參數:閾值功率、輸出功率、斜率效率作了理論計算分析，並研究了鉺、鐿離子濃度、光波導激活長度、信號光與泵浦光光斑半徑比例、輸出耦合鏡反射率對這三個關鍵性能參數的影響。Furthermore, it discusses how to figure out these models mentioned above. with reference to the design of various automobiles, it primary defines the method to get key parameters in platform lorry general design, and creates mathematical model. it provides more reference to choose axis, driving axle, number of arrest axles, type of tire, pump, motor, lift hydrocylinder, maximum payload and sole weight reasonably
在參考各類汽車設計思想的基礎上，根據理論推導和經驗公式的計算，初步確定了平板車總體設計階段的主要技術參數的求解方法，建立了數學模型，為合理地選擇軸、驅動橋、制動橋個數，輪胎型號、泵、馬達、舉升油缸、平板車的最大載重量和自重的選擇等提供了依據。In this case, health monitoring and fault diagnosis should turn to novelty detection ( nd ) technology, which offers a solution to this problem by modeling normal data, using some distance measure and a threshold for determining novelty. this thesis describes the exploratory work of applying a powerful nd technology ? one - class support vector machines ( oc - svms ) to the detection of faults embedded in turbopump vibration data. the main contents of this thesis include : ( 1 ) many popular nd methods are introduced together with their characters and two kinds of oc - svms methods are described in detail
本文針對液體火箭發動機渦輪泵的振動信號，結合新異類檢測技術中的單類支持向量機方法，對新異類檢測在渦輪泵試車故障檢測中的應用進行了嘗試，主要研究內容包括: （ 1 ）介紹了各種流行的新異類檢測演算法的原理以及各自的特點;重點介紹了新異類檢測技術中的兩種單類支持向量機原理，並在此基礎上建立了一種基於支持向量數據描述的新異類檢測模型。In the recent years, as the proportion of mechanic industry in nation economy increases, the requirement for safe operation of mechanic equipment is higher and higher. due to that all kinds of technology are progressively applied to mechanic equipment fault and diagnosis, such as signal processing, pattern recognition, etc., mechanical equipment fault and diagnosis technology has been developed rapidly all over the world. the reciprocating pump as a part of mechanic equipment field takes up very important station in production department, such as the petrochemical industry. because its applications are very widely, making researchs about its fault and diagnosis has important meaning. though people have already made out some researchs and obtained some research results, but the total diagnosis level is not still very high. based on former research results, according to the strong non - stationary characteristic of the pump valve signal of the reciprocating pump, this text introduces hilbert - huang transform ( abbreviated as hht ), and diagnosed the pump valve faults of the reciprocating pump well
雖然人們已對其開展了不少研究並取得了一些研究成果，但總的診斷水平還不是很高。本文在基於前人研究成果的基礎上，根據往復泵泵閥信號的強非平穩特性，引入了希爾伯特-黃變換（簡稱hht ） ，對往復泵泵閥較好地進行了診斷。往復泵由於其結構復雜，激勵源多，故其信號為強非平穩信號，對其進行故障特徵提取和診斷比較困難，所以本文主要研究了往復泵泵閥振動信號的特徵提取方法。分享友人