very low speed 中文意思是什麼
very low speed
解釋
甚低速-
In the french air force, mirage 2000 fighters in operation are : mirage 2000c / b single seater and two seater for air defence ; mirage 2000n, two seater, designed for all weather nuclear penetration at low altitude and very high speed ; and mirage 2000d, which is an upgraded version of the mirage 2000n, for automated bombing using conventional and laser guided munitions ; e type for multi purpose exporting version ; r for single seat day / night eaporting version
在法國空軍內，現役的幻影2000戰斗機為幻影2000c型單座戰斗機、 b型雙座戰斗教練機、幻影2000n雙座全天候低空高速核攻擊機以及其改進型d型常規精確制導武器攻擊機、幻影2000e多任務出口型、幻影2000r單座晝夜偵察出口型。 -
The roto - jet pump is a new kind of very low specific speed pump which is developed in recent years. it is always used in carbin black, food production, chemical industry and deep well mining system to supply the steady outflow with low flux and high pressure
旋轉噴射泵是近些年才發展起來的一種極低比轉數泵，主要用在碳黑、食品、化工以及深井采礦系統中用以提供小流量高水頭的穩定出流。 -
A new type of very low specific speed pump ? roto - jet pump is presented for low flowrate and high head transportation, which is introduced at the end of the thesis
論文最後主要研究了一種隸屬于極低比轉數離心泵范疇的新型泵? ?旋噴泵，它是一種新型的石油化工用泵，具有流量小、揚程高、流量揚程曲線平緩的特點。 -
In mscis interface system, the communication card change data with computer by isa interface, but isa interface ' s speed is very low, and often cause bottleneck question
在mscis介面系統中，原有的通信卡和上位主機是採用isa總線介面連接方式傳輸數據信息，但由於isa總線傳輸速率低易造成瓶頸效應。 -
First super - low specific - speed centrifugal pump has a long and narrow flow passage for its high head and low capacity, and the power absorbed by disc friction is too high, so the efficiency is very low ; secondly the diffusion of flow passage is so high, that the reserved flow often emerges at the inlet and outlet of impeller. therefore the h ~ q characteristic curve is often hump - shaped, and at the low - capacity operating condition the instability often occurs ; thirdly the centrifugal pump at high - capacity operating condition is easy to overload because the n ~ q curve appears a rising trend
首先由於它的揚程較高、流量較小，所以它的流道狹長，圓盤摩擦損失較大，效率相對較低；其次由於它的流道擴散較嚴重，易在葉片進口產生迴流和在出口產生脫流，揚程流量特性曲線易出現駝峰，在小流量工況下易產生不穩定現象；第三，由於其功率流量曲線呈現上升趨勢，在大流量區運行時電機易過載。 -
It is very difficult to monitor the widely applicable bearing with low speed and high load because of its own structure and operation features. there are few reports on the monitoring and fault diagnosis of bearing with low speed and high load
應用廣泛的低速重載軸承由於其自身結構及運行的特點，監測起來比較困難，目前有關低速重載軸承狀態監測與故障診斷的研究報道尚不多見。 -
Shock absorber is an important part of the vehicle suspension system. as an essential damping part of chassis components, shock absorber is closely connected with the operation, security and comfortabieness of the vehicle. the outer performance of shock absorber shall be indicated by the indicator diagram and the speed characteristic. the double - tube hydraulic shock absorber critical velocity is very low and easy to make outer performance degradation
減振器在車輛懸架系統中發揮著重要的作用，作為汽車底盤的主要阻尼元件，它不僅影響到車輛的舒適性，還關繫到車輛的操縱性及安全性，其外特性由示功圖和速度特性表示；普通雙筒液壓減振器臨界速度較低，易發生外特性畸變，且低溫條件下更易發生畸變。 -
Different results specify that the first kind of cost function is sensitive to the mismatch of ocean depth and receiver location, but is insensitive to sound speed profile ' s % $ jai8x9 @ t $ m & z mismatch and has high accuracy of depth localizaion ; the second kind of cost fimction is insensitive to all three kinds of mismatch, but its resolution of depth is very low ln order to overcome the cost function ' s sensitivity to mismatch, improvemedt of the accuracy of time delay estimation and model calculation may be adopted, when both conditions are reached, the sensitivity wiil be greatly reduced and the resolution of range and depth will be improved at the same time
模擬結果表明，第一類代價函數對海底深度和基陣傾斜失配是敏感的，對聲速失配卻不敏感，並且能夠獲得較高的深度定位精度；第二類代價函數對三種失配都不敏感，只是深度解析度較低。為了克服代價函數對失配的敏感性，可採用提高時延估計精度和模型計算精度的方法。當兩個條件滿足時，敏感性得到極大的抑制並獲得了較高的距離和深度估計精度。 -
Thus, it is difficult to find the voltage reference for the harmonic analysis. since acem are always operated near to the synchronous speed, the frequency of the excited voltage is very low, even to zero. therefore, this is the power harmonic suppression study of a complicated power supply system, in which the about harmonic general theories and methods are all inapplicable
現代交流勵磁電機（ acem ）採用電力電子變流器作為勵磁裝置，其勵磁電壓諧波含量豐富，難于獲得諧波分析所需的電壓基準，同時交流勵磁電機經常工作在同步轉速附近，致使勵磁電壓頻率極低甚至為直流，通常的諧波檢測方法和理論都無法適用，因而這是一種目前尚未深入探討過的復雜供用電系統電力諧波抑制問題的研究。 -
From there the air fills up the room at very low speed
新風以非常低的速度充滿整個房間。 -
It was still a technical problem on how to add the air to the reactor in so small pressure difference. in addition, the photocatalytic reaction efficiency was very low at the high speed. the reactor will be large, the price will be very high and the electricity will be enormously consumed during the photocatalytic - oxidation of h2s in the methane
主要原因是沼氣中不含氧，使用時氣體流速大，壓差小，而用光催化氧化方法消除h _ 2s需要有相當量的氧參與，在壓差很小的情況下，一次空氣的加入存在技術困難；在高氣體流速條件下，光催化效率低，若用光催化方法消除h _ 2s ，反應設備龐大，耗電量高，價格昂貴，農民難以負擔。 -
In order to accelerate the convergence speed, we employ the local time step, and implicit residual smoothing methods. finally, we use this method to get the steady solution of the flow around naca0012 and naca4412 airfoil at very low speed and some basic unsteady solution
本文對在低馬赫數下繞naca0012翼型和naca4412翼型的定常流場進行了求解，結果和實驗基本吻合，並對非定常運動情況進行了初步模擬研究，得出了一些有意義的結果。 -
Traditional direct torque control uses two value torque regulator which makes zero voltage vector work long and make flux shape bad seriously and makes response time long when the speed of induction motor is very low or drops down quickly. in order to solve this problem the thesis puts forward a new way to use three - value torque regulator, when the motor speed is very low or drops down quickly, the contrary voltage vector is used instead of zero voltage vector and the between the stator flux and rotor flux is reduced quickly so that torque is reduced quickly and response time becomes shorter
為此，本論文提出三點式轉矩調節，這樣當電機低速運轉或給定轉速突降時，不是加零電壓矢量，而是加反方向的電壓矢量，使定子磁鏈與轉子磁鏈之間的夾角迅速減小，從而使電磁轉矩也迅速減小，大大減小了調速時間，同時磁鏈值仍然保持基本恆定，輸出比較穩定的電磁轉矩，這在電機制動過程中非常有用。 -
Fpgas generally take up a large amount of space, resulting in a very low density of circuitry and limiting the number and speed of processing operations
通常fpga很占空間，所以電路的密度很低，也會限制運算的數目和速度。 -
For example, when the speed of transporting is very low, it is very difficult to track the receiver signal frequency through the common phase locked loop
如在傳輸數據速率較低時，普通鎖相環來跟蹤接收信號頻率則很困難。 -
How to improve the accuracy of flux observer is very important in high - performance motor system, especially at low - speed or zero - speed situation. high - frequency signal injection is believed the efficient method to solve these difficuilties
高頻信號注入來實現極低速甚至零速情況下磁鏈位置的觀測是目前該領域的熱點研究內容，本文採用的是d - q軸阻抗差異法。 -
Active magnetic bearing ( amb ) is a kind of novel high - performance bearing, in which rotor can be suspended by magnetic force. because of the contact - free property between the rotor and stator, the rotor can rotate at very high speed, and amb has the advantage of long lifetime, low power loss, low noise almost no wear and no lubrication. thus amb has great advantages over conventional bearing in many application fields
=主動磁懸浮軸承是利用磁力將轉子懸浮於空間的一種新型高性能軸承，由於轉子于定子之間不存在機械接觸，轉子可以達到很高的轉速，幾乎沒有磨損，壽命長，能耗低，噪聲小，無需潤滑，在很多應用領域內與傳統軸承相比存在明顯的優越性。 -
Active magnetic bearing ( amb ) is a kind of novel high - performance bearing, because of the contact - free property between the rotor and stator, the rotor can rotate at very high speed, with almost no wear. so amb has the advantages of long lifetime, low power loss, low noise and no lubrication
主動磁軸承是一種新型、高性能軸承，由於轉子與定子之間不存在機械接觸，轉子可以達到很高的運轉速度，幾乎沒有磨損，因而具有壽命長、能耗低、噪聲小，無需潤滑的優點。 -
By traditional methods, it is very hard to monitor and diagnose the bearings with low speed and heavy load because of its own special structure and operation features
其原因一方面是由於其結構和工作條件特殊，故障機理復雜，狀態監測難度較大。 -
Can fieldbus is a technology which efficiently supports distributed real - time with a very high level of security, it attracted attention with a very high level of capability and a very high level of security and a very better of anti - jamming and a very fast of communication speed and a very low of maintenance cost and a particular design, it was regarded a fieldbus with expansibility
Can現場總線作為一種有效支持分散式控制和實時控制的技術，以其穩定性好、可靠性高、抗干擾能力強、通訊速率高、維護成本低及其獨特的設計越來越受到人們的重視，並被公認為最有前途的現場總線之一。
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