active adj. 1.活动的,有活动力的;【生物学】活性的;【电学】有功的;【无线电】有源的;【物理学】放射性的。 2.有生气的,活泼的,灵敏的,敏捷的;主动的,能动的,积极的;有力的,勤勉的;【医学】有特效的。 3.现行的,活动中的;【军事】现役的。 an active demand 畅销。 an active volcano 活火山。 The market is active. 市场活跃。 active measures 积极手段。 on active service 【军事】现役,现役中的。 take an active part [interest] in 积极参加。 adv. -ly 活跃地;积极地,能动地;【语法】主动地。 n. -ness 活跃,积极性。
be active in 对…很积极; 活跃于; 积极参加; 积极于; 在......里活跃; 在……活跃
In active section , the fundamentals of fet and hemt that are used as multipliers were analyzed 在有源电路部分,我们分析了fet 、 hemt作为倍频器的基本原理。
Polymer matrix smart composite materials are the most active section in smart materials or intelligent materials field 聚合物基智能复合材料是近几年智能材料(英语为smart , intelligentmaterials )研究领域中较活跃的部分。
It is a important site , where " city life " will converge and citizens can enjoy the open space ; furthermore it is a window , through which strange people start to form their recognition of the city . still more , it is a significant section of " city characteristic " ; city open space extends outward , and outer natural open space organicly stretches into the inner city . open space at the city gate is extremely active section in the city eco - system 城市门户开敞空间是“城市生活”的重要汇集处,是人们享受开敞空间的重要地点;它也是人们开始一个城市认知的形象窗口,更是构成城市空间的景观意象? ? “城市特色”的重要部分;同时它又是城市开敞空间的外延,且城市外边缘区的自然绿野在此有机地契入城市内部,是城市生态系统中极为活跃的结合点与重要生长点。
In active section , in order to meet performance of out put power above 10dbm , the power amplifier module of ka - band is fabricated by using hmc283 to achieve the 14db conversion gain . there are five parts that include of waveguide - to - microstrip ? mixer ? filter ? power amplifier and waveguide - to - microstrip . input signal ' s power is 10dbm , after it pass waveguide - to - microstrip , it ' s frequency is escalate from 30ghz to 35ghz 该组件由五个部分组成:功率为10dbm信号经过波导? ?微带过渡,然后混频,滤波将30ghz提高到35ghz滤除不需要的谐波镜频以及三阶交调信号,为了弥补混频滤波的变频损耗,加一级功率放大器,此放大器采用hittle公司hmc283芯片,此上变频放大组件完成了上变频?滤波?放大功能。