operation n. 1.动作,行动,活动;业务,工作;作用。 2.效果,效力;有效范围,有效期间。 3 【工业】工序;开动,运转;操作,运用;施行,实施。 4.【数学】运算;【医学】手术;【军事】〔常 pl.〕军事行动,作战;〔pl.〕【航空】地面指挥所;【商业】(资金的)运用;交易;投机买卖;〔美国〕经营。 operation of breathing 呼吸作用。 regulations for technical operations 技术操作规程。 directing operation 【火箭】控制程序。 the operation of a machine 机器的运转。 a capital operation 大手术。 four operations (算术的)四则,加减乘除。 a base of operations 作战根据地,作战基地;策源地。 a plan of operations 作战计划。 main operations 主力战。 operations on exterior [interior] lines 外线[内线]作战。 come [go] into operation 开始工作,开始运转;生效。 in operation 活动着;运转着;施行着。 perform an operation (on sb. for a disease) (给某人)动(外科)手术。 put into operation 实施,施行。 undergo an operation 受手术。
Around key virgin mobile soldier . the next key used to the next ladder ; on the direction of bond : the use of a key . switching operations such as the use of a key virgin soldiers in the first use of key skills ; s virgin second soldier skills ; q , w key : switching virgin fighters 左右方向键移动维京战士用上下方向键来上下梯子上方向键:使用钥匙操作开关等a键使用维京战士的第一种技能s键使用维京战士的第二种技能q w键:切换维京战士。
The concept of minimum distribution part ( mdp ) is put forward together with the adjacent table based method to divide a distribution network into several mdps . based on above theory ; a novel way to identify fault sections of a distribution network is presented . algorithm to isolate the fault section with minimum switch operations and identifying of over - tripped switches are discussed 提出最小配电区域的概念,并基于等长邻接表的数据结构建立了最小配电区域分解的方法,在此基础上发展了一种新颖的配电网故障区域判断和隔离方法,研究了以最少的开关操作隔离故障区域的方法和越级跳闸开关的判断问题,探讨了针对采用重合分段器的配电网故障区域判断和隔离问题。
The characteristics of vfc - type analog to digital converter ( atd ) and successive approximation analog to digital converter are analyzed . the paper disscuss the advantage of mcu integrated adc , select the data acquisition system of the design . 4 . this paper utilizes the monolithic silicon integrated circuit performs switch monitoring and switch operation 在开人、开出回路设计方面,分析了传统开人、开出的不足之处,提出了对开人、开出回路进行改进的创新想法,设计了更为简洁、可靠的开人、开出电路。
In mechanical pressure switches , the form or change in position of a switching membrane , bourdon spring or pressure piston is transferred to one or more microswitches that are integrated into the housing and take over the actual switching operation ; the switching hysteresis is fixed or adjustable 在机械压力开关中,开关隔膜,波登弹簧或者压力活塞的形状或位置改变,转移到一个或多个集成在箱中的微动开关。这些微动开关事实上接管了开关操作。开关磁滞特性固定或者可调。
The control tactics of space voltage vector are investigated , and the simplified algorithm which judges the sector location of reference vector and calculates switch operation time is put forward . by analyzing the current hysteresis control , the relation between switch frequency , and hysteresis bandwidth and input inductance of pwm rectifier is deduced . by applying instantaneous power theory , the principle of pwm rectifier power control is analyzed , and the direct power control by matlab toolbox through estimating active power and reactive power with virtual flux is realized , and the simulation results prove that it is correct 对常用空间电压矢量控制策略进行分析,提出了给定参考矢量所在区间判断的简化方法,以及电压矢量作用时间的求取方法;分析了电流滞环控制策略,推导出开关频率与滞环带宽以及整流器输入电感之间的关系;应用瞬时功率理论分析pwm整流器功率控制原理,通过虚拟磁链估计有功功率和无功功率,用matlab实现了直接功率控制,并验证了该控制方法的正确性。
Supported by national natural science foundation of china under grant no . 50077006 , the measurement technology and analysis method of transient electromagnetic interference due to switching operations in substations are researched in this paper . the main contributions are as follows : 1 . an optical fiber sensing system of transient magnetic field is developed 本文结合国家自然科学基金资助项目“变电站瞬态电磁环境的预测计算方法研究” (项目编号: 50077006 ) ,重点研究了空气绝缘变电站由于开关操作产生的瞬态电磁干扰的测量技术和特征分析方法,主要研究成果如下: 1 、开发研制了一套光纤瞬态磁场传感系统。