low-speed condition 中文意思是什麼
low-speed condition
解釋
低速飛行狀態-
What ' s more, we put forward some experienced formulas on the basis of the cortical analysis. the result of the research show that by installing diffluent piers with low ridge, we can eliminate the root of oscillatiny water jump, perfect the energy dissipation effect of water jump, also, we can improve the flow condition of down - stream. the fact that the main flow of down - stream is in the middle, not only effectively lower the speed of the bottom flow in the ridge rear, alleviate the erosion to the river bed, but also avoid the heavy wave resulted from the main flow in the surface, thus improve the surface wave of down - stream obviously. we can work out the body style parameters of diffluent piers with low ridge according to the project flow condition and experience formulas, and then reckon the down - stream surface wave condition for the protected building of the down - stream bank
研究結果表明：設置低坎分流墩后，消除了擺動水躍水舌擺動的根源，提高了水躍的消能效果，改善了下游水流流態。下游水體的主流在中部，既有效的降低了坎后水流底流速，減輕水流對河床的沖刷，又避免了主流位於表面導致波浪過大的結果，下游的水面波浪明顯得到削減。依據經驗公式，可根據工程水流條件設計出低坎分流墩的體型參數，進而估算出下游沿程的水面波浪，為下游岸邊的砌護提供依據。 -
The text orders the market developing condition of bookbinding machine with gum, applicating the model design, arid devedlopping a king of low - speed bookbinding machine with gum which having the good market prospect
摘要本文根據膠訂包機的市場發展狀況，運用模塊化設計，開發出了一種具有良好市場前景的低速膠訂包本機。 -
The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance
通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。 -
Product description : this series product has entire auto - lubrication systems and the ordinary two big kinds supplies to select, this machine major parts cancels the needle, cam and the ball bearing all uses the high quality import components, also selects the high quality steel products quenching heat treatment to the main stress components, the essential components uses special phosphorus processing, the foreign dew components all adopts special - purpose seal - up device and drains the oil the measure, therefore, entire causes machine throughout to locate the lubrication is reliable, the revolution is steady, under the high speed low chirp condition works
本系列產品具有全自動潤滑型及普通型兩大類以供選用，本機主要零件勾針，凸輪及滾珠均採用優質進口零件，對主要受力零件亦選用優質鋼材淬火熱處理，關鍵零件則採用專門磷化處理，對外露零件均採取專用密封裝置及排油措施，因此，使整機始終處于潤滑可靠，運轉平穩，高速低噪的條件下工作。 -
A method based on the application of an injection process analysis software is introduced in this article, which optimize injection process through changing the design of fuel - injection pump cam. a model of 1115 single cylinder direct injection diesel engine is used as an example. with the help of pre - journey optimization, increasing cam lift and using tangent - function can make the matching of the injection system with the diesel more reasonable. without changing fuel pump installing size, it can enhance injection rate and injection pressure and improve the diesel operating stability in low speed condition
本文以國產1115型單缸直噴柴油機為例，介紹一種應用噴油過程分析軟體改進噴油泵凸輪設計的方法，通過增大噴油泵凸輪升程、採用切線函數凸輪並優化預行程的方式，在不改變噴油泵安裝尺寸的前提下，可提高噴油壓力和噴油速率，改善柴油機低速工作穩定性，使噴油系統與柴油機匹配更合理。 -
The effects of such elements as primary flow total pressure, flow rate, degree of fuel rich, nozzle structure, flying speed and secondary combustion on ejecting mode performance were researched. it was found that thrust augmentation can be achieved on the condition that the flying mach number is above 0. 7. to deeply analyze thrust augmentation mechanism in low speed range, the research was further continued by changing secondary combustion organization and aft - body configuration
研究了一次流總壓、流量、富燃程度、噴管結構、二次流來流速度、二次燃燒組織對引射模態性能的影響，發現實驗樣機構型在0 . 7ma以上的飛行條件下可以獲得推力增強，而在0 . 7ma以下無推力增強。 -
In such condition the ideal productivity could not became true let alone industrialization. conventional methods such as cuttage, graft, layer, have been used for nearly 2000 years by the most people. they are simple and easily spread, but with low propagating speed
植物非試管高效快繁技術（ ternpc ）無論在西北的沙漠荒地，東北的黑土地，華南的紅土地，還是華北華中大地均已燃起了大面積推廣的燎原之火。 -
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。 -
2 ) the evaluation standard of the running status for low speed and heavy load rolling bearings is hardly certain. this thesis makes the tests and research on the base of contrastive analysis. in result, we could get the basically operating method for the same type and the same environment but different bearings by the condition monitor and contrastive analyze
2 ）低速重載軸承狀態評判標準很難確定，本文基於對比分析思想對其進行測試研究，實踐證明，通過狀態監測對比分析能較好地掌握表徵型號和使用環境相同時不同軸承之間運行狀態的特徵。 -
The tap - changer is made with solid state relay as its working mechanism and controlled by microprocessor. this switch has totally cancelled the mechanical drive organization, by the microprocessor according to the voltage of second side microprocessor decide the working condition of solid state rely, high regulation speed, need not transition resistor, rush current is low. operating frequently ; there is no electric arc to produce, can put in the fuel tank of the voltage transformer directly ; the structure is simple, the fabrication cost is low, benefit and use widely among the voltages transformer of distribution
其中的有載調壓分接開關，它是一種完全由固態繼電器作為分接開關執行機構，由單片機控制的有載自動調壓的變壓器分接開關。該開關完全取消了機械傳動機構，由單片機根據變壓器二次側電壓的高低，決定與變壓器各分接頭聯接的固態繼電器的工作狀態。調節速度快，改變分接頭時不需過渡電阻，沖擊電流小，可頻繁操作；無電弧產生，可以直接放在變壓器油箱中；結構簡單，造價低，便於在配電變壓器中推廣使用。 -
Frequency sweep flight technique is used to collect the flight data of a model helicopter near its hover and low speed working condition, window frequency spectrum is combined to obtain the frequency response of both lateral and longitudinal channels, then weighted fitting method is utilized to obtain the transfer functions of the two channel
摘要利用掃頻試飛技術獲取了某無人直升機在懸停工作點附近的舵機輸入和直升機動態輸出數據，利用組合窗頻譜分析的方法獲取了直升機橫滾通道與俯仰通道動態的頻率響應特性，利用加權擬合的方法獲取了各自的傳遞函數。 -
It is analyzed through the research that the main restricted factors affected the rural agricultural extension organizations in yi zheng lies in : the unconsummated of management mechanism, the serious shortage of the fund of agricultural extension, the unsteadiness of the rural agricultural extension group, the overall low capacity of the people, not quite properness of the professional knowledge structure, the low speed of the knowledge updating, unclear goals of part rural agricultural extension organizations, the phenomenon of not so well relationship among agricultural research, education and extension, scattered one household of the agricultural production way concerning lack of agriculture technique demanding elasticity, etc. agricultural extension has presented some new diversions under new condition of agricultural development
根據調查分析，影響儀征鄉鎮農業推廣機構發展的制約因素主要有：管理體制不健全，農業推廣經費嚴重不足，鄉鎮農業推廣隊伍不穩，人員整體素質偏低、專業知識結構欠合理、知識更新緩慢，部分鄉鎮農業推廣機構發展方向不明，目前的農業科研、教育與推廣存在相脫節現象，一家一戶的分散的農業生產經營方式對農業技術需求彈性不足等。新形勢下的農業發展對農業推廣的要求也發生了新的轉變。 -
On the condition of high speed and high load, the worn surface of pam 1 / nylon 6 composites nearly melt and comparatively uniform transfer on the surface of steel is formed, which accounts for the rather low wear mass loss
高速高載時，尼龍6和剛性較小的pam2 /尼龍6復合材料磨損表面處于粘流態，並在鋼環表面形成了連續的轉移膜，表現出較好的耐磨損性能。 -
Plastic deformation happened in the worn surface where fe element was found, so pam micro - fiber supported part of the load and prevented the further deformation. on the condition of high speed and high load, the worn surface of pam1 / nylon 6 composites was nearly melted and formed comparative uniform transfer on the surface of steel, which accounted for the rather low wear mass loss. the infrared analysis showed that the a small quantity of transition of crystal form from into of nylon and its composites happened during the friction because of the high temperature and strong sheering strength
通過對復合材料耐磨性能研究表明：復合材料的摩擦系數隨載荷的增加而逐步下降，且磨損表面有明顯的塑性變形；從能譜分析結果來看，復合材料表面有fe的存在，表明pam微纖承受了部分載荷，並阻止了基體的進一步塑性變形及粘著轉移；在高速高載時， pam1 /尼龍6磨損表面處于粘流態，並在鋼環表面形成了連續的轉移膜，表現出較好的耐磨損性能，且在高溫和強剪切力的作用下，材料基體發生了少量的晶體向晶體的轉移。 -
Basing on the operating characteristics of the pmsm machine tool spindle drive system, a novel frequency multiplication circuits which can be switch to 2 or 4 times of base frequency is proposed in the paper. it resolves the paradox of using a same photoelectric encoder under high and low speed operating condition of motors
它能夠根據指令實時的對編碼器反饋回來的電機速度信號進行2倍頻或4倍頻處理，解決了用同一個編碼器來檢測電機低速和高速的矛盾。 -
In order to construct low - priced, reliable intelligent network in the uptown, to meet the demands of safety and information management in the intelligent uptown, i studied the fieldbus technology. base on our contry condition of intelligent building system and development tendency in the future, i made a suggestion on technical precept of high speed ethernet and designed an intelligent uptown monitor system
為了構建低廉、可靠的住宅小區智能化系統，實現小區安全防範和信息採集的要求，本人對現場總線進行了研究，針對我國目前智能小區的現狀及未來的發展趨勢，提出了基於高速以太網的技術方案，設計實現了小區監控系統。 -
The task in the open loop system is to get lpg injection duty ratio in pre - set two dimension map according to practical engine operation condition, while the task in the closed - loop system is to calculate lpg injection duty ratio by the approaching increment method or the proportion and integral ( pi ) controller according to the signal of the oxygen sensor. to eliminate the oscillation phenomena of the signal of the oxygen sensor in low - speed condition, this paper develops the stable increment method
開環階段根據實時工況參數對事先制取的噴氣占空比map圖執行取值操作；閉環階段根據氧傳感器反饋信號通過增量逼近法或pi環節計算輸出適合即時工況的噴氣占空比值；為解決低速振蕩現象，本文運用固定增量法，對系統進行低速振蕩微調。 -
Speed sensor has the limitation of high cost, taking up more space, low reliability and high dependency of working condition. speed - - sensorless frequency modulation system avoids those defects and can meet the need of high performance of ac motor driving which is a stress field
無速度傳感器變頻調速系統既避免了速度傳感器帶來的成本增加、體積增大、可靠性降低、易受工作環境影響等缺陷，又能夠滿足高性能交流傳動的需要，是運動控制發展的一個重要方向。 -
In the vwf system of induction motor, it is indispensable to need a speed - sensor in order to realize speed close - loop control. some matters that are brought by speed - sensor fixed and the system running condition usually become the system ' s a breakdown root and low the system ' s dependable, which is in contravention of people ' s original intention to use induction motor
在感應電動機變頻調速系統中，為了實現轉速的閉環控制，速度傳感器是必不可少的，速度傳感器的安裝及其運行環境所帶來的問題，往往成為系統的一種故障源，進而降低了系統的可靠性，這有悖於人們採用感應電動機的初衷。
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