The microstrip log periodic antenna was discussed and analyzed.讨论和分析微带对数周期天线.Two periodic jackknife, be helpful for national economy growing quickly continuously.两个周期的重叠, 有利于国民经济持续快速增长.The motion is periodic, which means...

胃周期痛...

one of the most prolific periods in her career她的创作生涯中成果最丰的时期之一Long dry periods wasted the land.长期干旱使土地荒芜了。...a singer able to sustain a full tone and clear articulation over extremely long periods.可以很长时间保持声音洪亮并且吐字清楚的歌手Th...

特征周期...

gastroperiodynia的音标：gastroperiodynia的英式发音音标为：[ɡæst'rəʊprɪədɪnɪə]gastroperiodynia的美式发音音标为：[ɡæst'roʊprɪrdɪnɪr]...

He consulted a number of relevant books and periodicals.他参看了不少有关书刊.Punning , facetious , irreverent, the funny man filled the newspapers and lighter periodicals with his material.那位诙谐作家满嘴双关语, 逗乐话, 以不敬的态度把他的作品填满报章和比较显赫的杂志...

n.时段，一段时间...

periods的音标：periods的英式发音音标为：['pɪrɪədz]periods的美式发音音标为：['pɪrɪrdz]...

n.期刊( periodical的名词复数 )...

Such aperiodic motions are not quantized.这种非周期性的运动不是量子化的.Inertia element ( aperiodic element )惯性环节 ( 非周期环节 )Events that are aperiodic and represent an occurence.不定期的并表示出现一次的事件....

period of time的音标：period of time的英式发音音标为：['piəriəd ɔv taim]period of time的美式发音音标为：['pɪriəd ʌv taɪm]...

He caught up on months of unread periodicals.他读完了数月之内出的没读的期刊。He consulted a number of relevant books and periodicals.他参看了不少有关书刊.I'll send you all the periodicals available.我将把我能得到的期刊给你寄去....

period的近义词有：age, epoch, era, period, times。下面这些名词均含"时期，时代"的含义：age ：常指具有显著特征或以某杰出人物命名的历史时代或时期。epoch ：正式用词，侧重指以某重大事件或巨大变化为起点的新的历史时期。era ：书面语用词，指历史上的纪元、年代，可与epoch和age互换，侧重时期的延续性和整个历程。period ：最普通用词，概念广泛，时间长短不限，既可指任何一个历史时期，又可...

The money was lent for an undefined period of time.这笔钱无限期借出。The inscription of the monument has worn away over a long period of time.年深月久,碑文已经磨灭了.For a long period of time Latin was the literary language of Italy.很长一段时期,...

n.不定期，非周期性...

periodic的音标：periodic的英式发音音标为：[ˌpɪəri'ɒdɪk]periodic的美式发音音标为：[ˌpɪri'ɑdɪk]...

periodicals的音标：periodicals的英式发音音标为：[ˌpɪərɪ'ɒdɪkəlz]periodicals的美式发音音标为：[ˌpɪərɪ'ɒdɪkəlz]...

periodical的近义词有：magazine, journal, periodical, publication, newspaper, review, press。下面这些名词均有"出版物，定期刊物"的含义：magazine：指刊登各种文章、小说、诗歌、评议的杂志。 journal：本义为"日报"，现在可指定期发生的周刊、月刊、季刊等或指学术团体出版的刊物、杂志或学报。periodical：通常指除日报以外的定期出版刊物。publ...

Long long ago, we knew the periodic motion of a planet.很久以前, 我们就知道行星的周期运动.Periodic checks are taken to ensure that high standards are maintained.定期检查以确保维持高水准。Some commercial laboratories use periodic nitrate tests as gui...

jasperiod的音标：jasperiod的英式发音音标为：[dʒæs'peraɪəd]jasperiod的美式发音音标为：[dʒæs'peraɪəd]...

the characteristics of periodic and aperiodic tasks周期任务和非周期任务的特点Events that are aperiodic and represent an occurence.不定期的并表示出现一次的事件.Such aperiodic motions are not quantized.这种非周期性的运动不是量子化的.Inertia element ( aperiodic ele...

adj.周期的，定期的，回归的，间歇的，时而发生的...

hyperiodemia的音标：hyperiodemia的英式发音音标为：[haɪpraɪə'di:mɪə]hyperiodemia的美式发音音标为：[haɪpraɪə'dimɪr]...

Periodically , the lamellae become enlarged, forming flattened, membrane - enclosed vesicles called thylakoids.片层周期性地扩展, 形成扁平的有膜为界的囊,称为类囊体.Mortality is the number or volume of trees periodically rendered unusable through...