multiple adj. 1.多重的;复合的,复式的,多数的,多样的。 2.倍数的,倍。 3.【电学】并联的;多路的,复接的。 4.【植物;植物学】聚花的。 a man of multiple interests 兴趣广博的人。 n. 1.【数学】倍数。 2.【电学】并联;多路系统。 3.相联成组。 4.成批生产的艺术品〔画、雕塑、工艺品等〕。 common multiple 公倍数。 least common multiple 最小公倍数。
pulse n. 1.脉搏;有节奏的跳动;【动物;动物学】脉冲(波);脉动。 2.意向;倾向。 3.【音乐】拍子,律动。 His pulse was at a hundred. 他的脉搏(每分钟)一百次。 a galloping pulse 急脉。 a high pulse 强脉。 a long [ slow ] pulse 缓脉。 a weak pulse 弱脉。 an action pulse (火箭)触发脉冲。 a carry pulse 进位脉冲。 a driving pulse 起动脉冲。 feel sb.'s pulse =have one's fingers on the pulse of sb. 按某人的脉;探某人的意向。 stir sb.'s pulses 鼓动某人的情绪;使人兴奋。 with quickened pulses 心跳得更快地。 vi. 脉跳动;震动;脉动。 vt. 使发生脉冲;用脉冲输送(血等) (in out)。 n. 〔sing., pl. 〕 豆类;豆。
The system is based on ultrasonic multiple pulse - echo principle , the control circuit of sonic circulation , can improve the precision of measurement by extending the time of detection 本系统以超声波多次脉冲反射法测距原理为基础,设计声循环反射控制电路,达到以延长测量时间为代价提高测量精度的目的。
We modified the electron trapping theory to be consistent with our simulation results . 2 . in the mp - lwfa simulation , we studied the influence of multiple pulses with various arrangements of the position of the pulses 在mp - lwfa中,我们研究不同的脉冲长度、不同的脉冲间隔对产生尾流场的影响,着重讨论尾流场的饱和机制。
The wakefield excited by an ultrashort and ultrahigh laser pulse propagating through tenuous plasma can accelerate electrons to extreme high energy . this can be used as a mechanism to design minitype electron accelerator . this thesis is devoted to studying those issues relevant to the wakefield accelerator , namely the laser wakefield accelerator ( lwfa ) , laser wakefield accelerator driven by multiple pulses ( mp - lwfa ) , plasma beat wave accel - erator ( pbwa ) and self - modulated laser wakefield accelerator ( sm - lwfa ) 本文的目的是:利用粒子模拟方法,研究和比较激光尾流场加速电子的四种主要方案:短脉冲激光尾流场加速( lwfa ) 、多脉冲激光尾流场加速( mp - lwfa ) 、拍频束尾流场加速( pbwa ) 、自调制激光尾流场加速( sm - lwfa ) 。
Secondly , we compared the similarities and differences of two multiple pulse schemes , namely " optimum pulse spacing " and " fixed pulse spacing " . it showed that the arrangement with both the spacing between pulses and the length of the single pulse increasing as the plasma wave becomes more nonlinear will drive wake wave effectively 接着我们比较“优化脉冲间隔”和“固定脉冲间隔”两种多脉冲尾流加速方案,得到:更合理的脉冲安排应该为:脉冲间隔不断增大,脉冲长度也不断增大。