a couple of 兩個;幾個; 兩三個,幾個; 一對,一雙;幾個; 一對..., 三兩個..; 一對,一雙;幾個
couple n. 1.一對,一雙。 2.配偶,夫婦,未婚夫妻,一對舞伴。 3.〔口語〕交媾;【物理學】力偶;電偶;【天文學】聯星。 4.〔口語〕(少數)幾個,兩三個。 an old couple老兩口兒。 a married couple夫婦。 a pack of 20 couple二十對的一群獵犬。 a thermo-electric couple溫差電偶。 a couple of days 二三日,數日。 go [hunt, run] in couples 總是成雙成對;協力。 vt. 1.(兩支)拴在一起,配合,連接。 2.使結婚;(使)交配。 3.由…聯想到(…);把…同聯系起來。 couple two railroad coaches 把兩節鐵路車廂連接起來。 vi. 擁抱,摟抱;交尾;結婚;結合,配合。
The lack of a social security system for china ' s farmers has often forced couples to exceed birth quotas or abandon girls so they could have a son 由于中國農民享受不到社會保障,因此常常迫使夫婦超生或者來男孩后便遺棄女孩。
The analysis showed the strain of section is not plain under moment so that the moment is carried by force couple in the outer frame . 4 . the paper gave the rigid frame - compression bar model for practical computation 在試驗研究的基礎上,提出了密肋復合墻板實用設計的鋼架斜壓桿模型;通過線彈性有限元分析,就其優化設計進行了探討。
According to the working principle of magnetic bearing , there exists force coupling , magnetic coupling in radial magnetic bearings inside the magnetic suspension rotor system , and there exists force coupling , moment coupling between magnetic bearings as well 摘要磁懸浮轉子系統中,根據磁力軸承工作原理,徑向磁力軸承內存在力耦合、磁耦合;徑向磁力軸承之間存在力耦合、力矩耦合。
The magnetic force coupling is analyzed and calculated . after building the dynamics model for the maglev system , discoupling design is run , and the simulation experiment with the leap response and capability of anti - jamming for maglev stage are carried out 在建立了磁懸浮系統的動力學模型基礎上,對磁懸浮系統進行了解耦控制設計,并對解耦后的磁懸浮定位平臺進行了階躍響應和抗干擾能力的仿真試驗。
In this paper , the drive theory of the large ratio friction transmission is studied ; a new type elliptical cam wave generator is designed ; the large ratio friction transmission prototype is designed and manufactured ; based on the ansys finite element method software , structure of the elliptical cam is analyzed ; precision index of the manufactured large ratio friction transmission prototype , such as transmission accuracy , least step , stability of the least step , load capacity is measured by the absolute rotary encoder . by analyzing the measurement data and research content , it is think that the new elliptical cam wave generator could overcome a good many problems brought by processing errors , facilitate size precision adjustments , input moment can be achieved in the form of a pure force couple importing ; through this study , " the large ratio friction transmission prototype " could apply in practical engineering basically 本文研究了大速比摩擦傳動的傳動理論;設計了新型橢圓凸輪波發生器,設計制作了大速比摩擦傳動樣機;用軟件ansys對所設計的橢圓凸輪結構進行了有限元分析;用19位絕對式編碼器測試了大速比摩擦傳動機構的傳動精度、最小步距、最小步距的穩定性以及帶負載能力等各項精度指標;對測量數據和研究內容進行了歸納和整理,認為新型橢圓凸輪波發生器克服了加工誤差帶來的諸多問題,新型橢圓凸輪波發生器可以進行尺寸精度調整,能夠達到輸入力矩以純力偶的形式輸入;通過本項研究,基本可以使“大速比摩擦傳動機構”在工程中得以應用。
Pitch control system consist of three channels which is formed by three drive units . base on need of bench , drive system scheme is designed . single channel three - loop position servo system which is formed by linear motor is simulated . then kinetic behavior of rotor and system ’ s force coupling relation is analyzed . a compensation method for dynamic load which is caused by rotor rotation is presented base on structure - invarient theory 根據實驗臺的技術要求,設計了整個驅動系統方案。對由直線電機構成的單通道三環位置伺服系統進行了設計和仿真。分析了旋翼運動的動力學特性、系統力耦合關系,并根據結構不變性原理對由旋翼運動產生的動態載荷提出了補償方法。