velocity n. 1.迅速;快速。 2.速度,速率。 3.周轉(zhuǎn)率。 at a velocity of 100 miles per hour 用每小時一百英里的速度。 dart off with the velocity of a bird 像鳥一樣迅速飛跑過去。 drag-free velocity無阻力飛速,真空飛速。 escape velocity(克服地球引力的)第二宇宙速度,逃逸速度。 final velocity (發(fā)射物的)終速。 initial [muzzle] velocity(發(fā)射物的)初速[腔口速度]。 uniform [variable] velocity勻[變]速。
The proposed control law can guarantee that the mobile robot will track the desired trajectory in the global sense as well as in finite time when the desired rotate velocity is a nonzero constant 使得對角速度為非零常數(shù)的期望軌跡,非完整移動機器人能夠?qū)崿F(xiàn)全局跟蹤,并能在有限時間內(nèi)完全跟蹤上期望軌跡。
The principle of the super speed autofrettage technology of the impellers of a booster was described , two design plans of the super speed process were provided , and the optimum method of determining the super rotating velocity was proposed 敘述了增壓器葉輪超速自增強技術(shù)的原理,提供了兩種超速工藝的工裝設(shè)計方案,并通過有限元分析,提出了最佳超速轉(zhuǎn)速確定的方法。
High accuracy for the time measuring is required in modern scientific experiment , scanning speeds on the image plane is a reference for the time measurements in high speed rotating mirror camera , and , it changes as the rotating velocity only 現(xiàn)代科學(xué)實驗對時間信息的測量提出了極為嚴(yán)格的要求,對于高速轉(zhuǎn)鏡相機而言,其像面上的掃描速度是時間測量的基準(zhǔn),掃描速度值唯一地隨轉(zhuǎn)鏡速度而變。
The adding of process - control agent can effectively keep the powder from sticking to the milling ball and the inner wall of containers . the increase of rotating velocity and the ratio of ball to powder can accelerate the phase transformation and thus shorten the alloying time 加入過程控制劑,可以有效地防止粉末粘覆磨球和罐內(nèi)壁;球磨轉(zhuǎn)速的提高和球粉比的增加,都會加速相轉(zhuǎn)變過程,從而縮短合金化時間。
( 3 ) on the basis of analyzing the trait of the unbalance signal , the dissertation brings forward the signal processing flow accordingly , the sampling and digital processing of the signals are described and the calculation of the rotate velocity and the fast computing method of the unbalance are presented ( 3 )在分析不平衡信號特征的基礎(chǔ)上,設(shè)計了信號處理流程,介紹了振動信號的采樣以及數(shù)字處理,研究了轉(zhuǎn)速的測算以及不平衡量的快速計算方法。
( 2 ) starting off with analyzing the forces affected on single dry solid granule on the roller screen , the relative slippage and slipping condition of granule at the tangential direction and axis direction of roller screen are discussed , and the average slipping conveyance velocity from feeding end to discharging end is given . the throwing conveyance of granule is discussed , the throwing coefficient of roller screen and its varying rule , and the concept of average throwing coefficient and its computing method are put forward , the starting condition and terminating condition for throwing motion of granule on the roller screen and the throwing conveyance velocity of granule are researched . the influence on throwing motion of granule by the rotating velocity of roller screen is discussed as well ( 2 )從筒式篩網(wǎng)上單顆干固相顆粒的受力分析著手,討論了顆粒在筒式篩網(wǎng)面上的切向相對滑動和軸向相對滑動及滑動條件,并導(dǎo)出了顆粒從進(jìn)料端向出料端滑動運移平均速度;討論了顆粒的拋擲運移,給出了筒式篩網(wǎng)上的拋擲指數(shù)及其變化規(guī)律,提出了筒式篩網(wǎng)的平均拋擲指數(shù)的概念及計算方法,研究了筒式篩網(wǎng)上顆粒拋擲運移的產(chǎn)生條件和終止條件,以及顆粒拋擲運移的輸送速度;還討論了筒式篩網(wǎng)的旋轉(zhuǎn)角速度對顆粒拋擲運動產(chǎn)生的影響。
Characters of the flow field of molten metal in mhd caster are s imulated and analyzed by means of numerical simulation . relationship between flow field of molten metal and the number of magnet poles , arrangement of magnet pole s , rotating velocity of magnetic field as well as helical arrangement of permanen t magnets is revealed . it can be used as reference for optimizing design of perma nent caster 利用數(shù)值模擬對不同磁場條件下的永磁鑄機金屬液流場特征進(jìn)行了模擬分析;揭示了金屬液流場與永磁體極數(shù)、磁極排布方式、磁場旋轉(zhuǎn)速率以及永磁體螺旋式排布之間的關(guān)系,為永磁鑄機的優(yōu)化設(shè)計提供了參考依據(jù)。
Aimed at design index of input power 1 . 5kw , most output rotate velocity 300rpm , and rating output rotate velocity 150rpm , considering factors of angle and ratio of transmission , on the basis of kinematics simulation , author optimized the kinematics parameters . in this paper , author has made some analysis and study to the primal assembly condition of transformer ' s sequential action in theory , designed structure dimension of the input and output transformer , and verified the corresponding strengthen . further , the structure , which is to key transmission components of velocity control system of the speed regulator , has been designed based on meeting operational sensitivity , precision and self - locking 本文針對輸入功率為1 . 5kw ,最大輸出轉(zhuǎn)速,額定輸出轉(zhuǎn)速的無級變速器的設(shè)計要求,并考慮到傳動角及變速比等因素,在運動學(xué)仿真的基礎(chǔ)上,對運動學(xué)參數(shù)進(jìn)行了優(yōu)化;本文對變換器連續(xù)作用的初始裝配條件進(jìn)行了理論分析與研究,對輸入、輸出變換器作了結(jié)構(gòu)尺寸的設(shè)計,并進(jìn)行了強度校核計算;本文還對變速器調(diào)速系統(tǒng)中主要傳動構(gòu)件在滿足操作的靈敏度、精度、自鎖性的基礎(chǔ)上進(jìn)行了結(jié)構(gòu)設(shè)計;最后采用workingmodel3d軟件,進(jìn)行虛擬樣機的計算機輔助仿真設(shè)計及運動學(xué)和動力學(xué)計算。