action n. 1.动作,活动;行为,行动。 ★ act 指一次所作的行为;action 虽与 act 同义,但多半指某一期间内出现数次的行动;累积而成的 action 叫做 conduct. 2.举动,态度,姿势。 3.主动力,作用,机能。 4.(机械装置中)有动作的部分;机械装置[作用]。 5.措施,手段。 6.(演员的)表演;(小说等中的)情节。 7.【法律】诉讼。 8.【军事】战斗,战事。 9.某一地区[场合]内最热闹盛行的活动。 10.〔美口〕刺激性的活动;赌博。 a chemical action 化学作用[反应]。 Take (prompt) action 采取(快速)措施。 Accept action 应战。 An encounter action 遭遇战。 A defensive [an offensive] action 防御[攻击]战。 A-! 【电影】开演! A- stations!【军事】各就各位! Action of the bowels 【医学】通便(作用)。 Action of the first impression 【法律】新诉〔无以前判例可循的诉讼〕。 Be in action 行动中。 Be put out of action 失掉战斗力;(机械等)出毛病,不灵。 Break off an action 停战。 Bring [take] an action against 对…提起诉讼,控告。 Bring [come] into action 使…参加战斗,参战,使开始战斗,开战。 By [under] the action of 在…作用下。 Clear (a ship, or the decks) for action (军舰)准备战斗。 Go into action 开始行动;投入战斗。 Line of action 【物理学】作用线;〔比喻〕活动的形式[方针]。 Man of action 活动家,实行家。 Out of action 损坏;有故障。 Put into [in] action 实行,实施;开动。 See action 加入战斗。 Suit the action to the word 见 suit 条。 Take action (in) 1. 着手,动手,开始。 2. 提起诉讼 (against)。 vt. 古语〕对…提起诉讼。 -er n. (电影的)动作片,打斗片。
With the joint action of the q - switched pulse laser of 532nm and continuous probe light of different wavelengths , fast photoresponse characteristic of photocycle of a wild - type br film ( wt3 ) and photoabsorption characteristic of different intermediary in the photocycle are analyzed and discussed . the optical switch action in the microsecond scale is observed in the experiment 在532nm的调q脉冲激发光和不同波长的连续探测光作用下,分析和研究了野生型的细菌视紫红质( wt3 )膜的光循环过程中的快速响应特性及各中间态的快速光吸收特性,得到了微秒级的快速光开关结果。
Multilevel inverter technology is a pop research in high voltage and high - power converting fields . it can synthesize multilevel output with the distribution of dc voltage and the combination of different switching actions to reduce voltage stress across the switches and bulk of the equipment , and lessen output harmonic distortion and switching loss of the inverter 多电平逆变器是当前高压大功率电能变换领域中的研究热点之一,它通过对直流侧的分压和开关动作的不同组合,实现多电平阶梯波输出电压,能有效地减小器件承受的电压应力,缩小装置体积,减小输出电压谐波和开关损耗。
High - frequency link power converters are receiving increasing attention . when the input frequency of ac - ac converter is quite high , such as 20khz or above , in order to make sure the converter switching action is restricted to the zero crossing point of the link voltage , the switching cycle becomes discrete pulse spectrums , however , the conventional pwm converters are ruled out because they would fail either to the efficiency or the low - distortion criteria 当交-交变频器的输入频率非常高,通常为20khz时,为了在零电压条件下实现逆变器开关管的通断,变换器的开关时刻必须选择在高频交流电压脉冲为零时,这意味着变换器开关时刻在时间轴上成为不连续的点,而常规的硬开关pwm变换器是将开关时刻选择在任意时刻。
Although dm can also solve the modulation time error , but the output waveforms can ’ t reach the industrial standard ( total harmonic distortion thd ) . considering this , a new control strategy called current optimal control ( coc ) is presented in paper . coc is that system samples the output value real time , comparing with expected value , considering all switching actions available then draw a concluding to decide which way would be fastest and best way to render system smooth 针对这一缺点,本文提出了一种更好的控制策略,电流最优delta调制,它是在电流滞环控制的基础上,根据电路的输出信号来分析,考虑所有可能的逆变器动作来决定选用哪一种开关转换方式能最快最平稳地达到预期值,采用的是一种电流预测控制手段,从而使输出波形的纹波最小。
Continuous - time filter needn ’ t a / d switch , data processing , d / a switch technique and so on to finish filtering function with analog signal like digital filter . and it needn ’ t switch action to sample data in the discrete time with analog signal like switched capacitor filter . so continuous - time filter has several advantages , such as high processing speed , simple circuit configuration , and low power consumption 对每种方法都进行了详细的推导,总结了每种设计方法的设计步骤、适用场合,举例用每种设计方法对具体滤波器进行了电路设计、灵敏度特性分析、失真特性分析等,并用计算机仿真验证了电路方案。