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- The activities of palladium catalysed cross coupling reactions of substituted bromobenzenes were studied. 分析了溫度、化劑、同取代基團對取代溴苯發生鈀催化偶聯反應活性的影響。
- No cross coupling between inductors due to low magnetic shield and high reliability. 漏磁小,不產生耦合,可靠性高。
- On the basis of the theory of vehicle-track coupling dynamics and noise radiation and propagation, mechanism of wheel/rail noise is analyzed. 根據車輛-軌道耦合動力學理論及聲輻射與傳播理論,分析了列車運行過程中產生輪軌雜訊的機理。
- For having missile of two sets of the same side directions autopilot,there is cross coupling between two control channels. 對於具有兩套相同側向自動駕駛儀的導彈,兩個控制通道之間存在交叉耦合。
- Based on the theory of vehicle-track coupling dynamics,the vertical and lateral coupling model of the vehicle-track system is set up. 基於車輛-軌道耦合動力學理論,通過建立車輛-軌道垂橫耦合模型,利用時域數值積分法進行了耦合系統的隨機響應分析。
- Six liquid crystals intermediates were synthesized by palladium catalysed cross coupling reactions with six substituted bromobenzenes and2 methyl3 butyne2 ol. 以4氟溴苯、,4二氟溴苯、,4,5三氟溴苯、碘溴苯、甲氧基溴苯、丙基溴苯為原料,分別與2甲基3丁炔2醇發生鈀催化偶聯反應,合成了6個苯基炔醇液晶用中間體。
- In this paper,rigid-flexible coupling dynamics of a curvic beam attached with a central rigid body undergoing spatial large overall motion,is investigated. 研究帶中心剛體的作大範圍運動的空間曲梁的剛-柔耦合動力學。
- Stepped Impedance Resonators(SIR) taken as basic resonator unit of coaxial filters,a kind of generalized Chebyshev coaxial-cavity filter through cross coupling is designed. 利用階躍阻抗諧振器SIR作為同軸腔濾波器的基本諧振單元,設計了一個利用交叉耦合來實現廣義切比雪夫函數的同軸腔體濾波器。
- In the mathematical model of PWM rectifier in d-q synchronous reference frame, there is cross coupling between active and reactive components of the line current, which is difficult to control. PWM整流器在d-q旋轉坐標系的數學模型中,有功電流與無功電流之間存在耦合,給控制帶來困難。
- On the basis of analysis on error model of ultra precision CNC machine tool, the variant gain cross coupling control algorithm is introduced into the servo control of ultra precision CNC machine tool. 文章在分析超精密數控機床誤差模型的基礎上,將變增益交叉耦合控制演算法引入超精密數控機床的伺服控制。
- The energy required to generate enough hydroxyl radicals to destroy the cell membrane is much less compared to the energy required to inactivate the cell through DNA cross coupling. 用於產生足夠羥基原子團以摧毀有機物細胞膜的能量相比較使DNA雙螺桿結構鈍化所需的能量少很多。
- Because the flexible arm is a nonlinear and strong coupling dynamic system, the method of fuzzy self-tuning PID controller is proposed. 針對研究對象強非線性和強耦合性的特點,提出了一種具有自適應特點的PID參數模糊自調整控制方案。
- rigid-flexible coupling dynamics 剛-柔耦合動力學
- Rigid-elastic coupling dynamics mode 剛-彈耦合動力學模型
- The main results of the simulation show that the hypoxia phenomena in the PRE are caused mainly by the coupled dynamics of the water stratification and biochemical processes. 珠江口存在的底層水體缺氧現象是水體強烈層化和生化耗氧過程共同作用的結果。
- In the crossing coupling reactions, the yield is at similar level due to unobvious electron effect resulted from the existence of ketones. 苯環上取代基的種類及位置對反應也有影響。在交叉偶聯中,由於有酮存在,因此電子效應不明顯,產率差不多。謝謝大家!
- In order to avoid cross couplings between the vertical and lateral motion,decoupling control of a double-channel control rolling missile autopilot was studied. 為消除旋轉導彈自旋所帶來的縱向與側向運動的交叉耦合,進行了雙通道控制旋轉導彈自動駕駛儀迴路解耦控制研究。
- thermo-mechanical coupling dynamics 熱機耦合特性
- An asynchronous staggered iteration FEM method with explicit difference scheme is suggested to solve solid-liquid coupling dynamic elastoplastic problem. 提出了一個新的次塑性模型並用試驗作了初步驗證,建議用非同步交叉迭代顯式差分有限元求解固液耦合動力彈塑性問題。
- It is rash to cross the street without looking both ways. 不朝兩邊看看就穿馬路是莽撞的。