periodic什么意思？

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...

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]...

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...

Amphisopidae的音标：...

retract的现在进行时为：retracting...

flagged的音标：flagged的英式发音音标为：[flægd]flagged的美式发音音标为：[]...

cantankerous的音标：cantankerous的英式发音音标为：[kæn'tæŋkərəs]cantankerous的美式发音音标为：[kæn'tæŋkərəs]...

adj.颠倒的，乱七八糟的，混乱的adv.颠倒，乱七八糟，混乱...

n.柔板( adagio的名词复数 )，慢板，柔板乐章，（男女二人或三人舞时女角保持高难度平衡的）缓慢动作...

They were a helicopter to film the train going Viaduct.他们用直升飞机拍摄列车通过桥的场景.continuous viaduct连续高架桥Viaduct accounts for 86 percent of the Pearl Line.摘要明珠线全长86%是高架桥.overhead viaduct高架桥curved viaduct曲线高架桥With their aid a vita...

adj.增补的，追加的，supplementaryn.补充者，增补物...

abortion的音标：abortion的英式发音音标为：[ə'bɔ:ʃn]abortion的美式发音音标为：[ə'bɔrʃn]...

n.迪尔伯恩马车（一种小型四轮马车），迪尔伯恩（美国一城市）...

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Then he was so sprightly, so clean.那时候,他是那么生气勃勃 、 衣冠整洁.She was as sprightly as a woman half her age.她跟比她年轻一半的妇女一样活泼....the sprightly 85-year-old President.精神矍铄的 85 岁的总统She is as sprightly as a woman half her age .她跟比她年轻一...

bola的音标：bola的英式发音音标为：['bəʊlə]bola的美式发音音标为：['boʊlə]...

头发变白并不一定等于变老了。Going grey is not necessarily synonymous with growing old.“你担心变老吗？”——“一点也不。”"Do you worry about ageing?"— 'Not in the slightest.'他渐渐变老了。He's growing old....

She had a mass of auburn hair.她有一头浓密的棕发。She shook her mane of auburn hair.她甩动她红褐色的长发.Her stylishly short auburn hair was streaked naturally with gray.她时髦的金棕色短发里自然地夹着几丝灰发....