periodic 词态变化
副词: periodically;
periodic 中文词源
periodic 周期性的来自period,周期，时期。
periodic 英文词源
- periodic (adj.)
- 1640s, from French périodique (14c.), from Latin periodicus, from periodus (see period).
Periodic table in chemistry (1889) is from notion of the arrangement, in which similar properties recur at intervals in elements in the same area as you read down the rows of the table. This sense of the word is attested from 1872 (periodic law).
periodic 英文释义
- 1. happening or recurring at regular intervals
- 2. recurring at regular intervals
- 3. recurring or reappearing from time to time;
- "periodic feelings of anxiety"
periodic 双语例句
- 1. There may be periodic police "sweeps" of crime in the area.
- 警方可能对该地区的犯罪活动进行定时的“扫荡”。
来自柯林斯例句
- 2. Periodic checks are carried out on the equipment.
- 设备定期进行检查。
来自《权威词典》
- 3. 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.
来自《简明英汉词典》
- 4. These arrangements are subject to periodic reviews.
- 这几项安排每隔一定时间须予复查.
来自《现代汉英综合大词典》
- 5. Periodic checks are taken to ensure that high standards are maintained.
- 定期检查以确保维持高水准。
来自辞典例句
periodic 实用场景例句
- Periodic checks are carried out on the equipment.
- 设备定期进行检查。
牛津词典
- Mailing lists are updated periodically.
- 邮寄名单定期更新。
牛津词典
- Periodic checks are taken to ensure that high standards are maintained.
- 定期检查以确保维持高水准。
柯林斯高阶英语词典
- ...periodic bouts of illness.
- 周期性发病
柯林斯高阶英语词典
- Atomic structure and the periodic table.
- 原子结构和元素周期表.
期刊摘选
- Implement equipment periodic maintenance and maintenance plan.
- 设备的定期保养及维修计划实施.
期刊摘选
- When workers think a periodic purge is imminent, everyone feels equally threatened.
- 当员工听说要定期裁员时, 人人都同样地感到受威胁.
期刊摘选
- TITLE: Which thyroid cancer patients need periodic stimulation tests?
- 题目: 那类甲状腺癌患者需要定期刺激试验?
期刊摘选
- Elected officials must reelection at periodic intervals, when their record is subject to intensive public scrutiny.
- 选举产生的官员必须定期接受改选, 届时其业绩要受到彻底的公开审查.
期刊摘选
- A wave that repeats, like the one above, is called a periodic wave.
- 如上图所示的周期性的波, 称之为周期波.
期刊摘选
- Some commercial laboratories use periodic nitrate tests as guides.
- 许多商业性的试验室已应用定期的硝态氮分析作为指导.
辞典例句
- Like macroeconomy, the development of real estate industry also shows a phenomenon of periodic fluctuation.
- 与宏观经济运行过程中一样, 房地产业也客观存在着周期波动现象.
期刊摘选
- The process of mineral resources exploration and exploitation has periodic, progressive and repeated features.
- 矿产资源勘查开采过程具有周期性 、 反复性和渐进性的特点.
期刊摘选
- The policy reversal as shortages spread the capital, which is usually the country's periodic supply crunches.
- 政府政策出现逆转,是因为短缺问题已经蔓延到了首都北京.通常情况下, 北京不会受到中国每隔一段时间会发生的供应短缺影响.
期刊摘选
- These arrangements are subject to periodic reviews.
- 这几项安排每隔一定时间须予复查.
《现代汉英综合大词典》
- The interaction properties of periodic waves are found to be inelastic.
- 研究了这些周期波之间的相互作用,发现其相互作用是非弹性的.
期刊摘选
- The number of complete cycles of a periodic process occurring per unit time.
- 生命周期是经济学中用的一个术语.
期刊摘选
- Discretionary fixed costs arise from periodic ( usually yearly ) budget decisions that reflect top management policies.
- 可自由处理固定成本产生于反映高层管理人员政策的定期 ( 通常是一年 ) 的预算决策.
期刊摘选
- Valuations not yet subject to systematic periodic adjustment.
- 评估还没有系统的周期性调整.
期刊摘选
- The survival strategy of herpes simplex virus centers on developing latent infection and periodic reactivation.
- 单纯疱疹病毒在体内的生存策略是建立潜伏感染,一定条件下被激活而致病情复发.
期刊摘选
- According to Mendeleyev's periodic table, there seem to be still some elements undiscovered yet.
- 按照门捷列夫周期表, 似乎还有一些元素尚未发现.
期刊摘选
- A method of target classification based on JEM periodic signature is proposed.
- 提出了基于JEM周期特征的目标分类方法.
期刊摘选
- Another example is the F ring, whose periodic clumps seem to have been imprinted by Prometheus.
- 环是另一个例子, 它起伏规律的纹块似乎是由土卫十六印制出来的.
期刊摘选
- Some existence theorems of periodic traveling wave solutions for this kind generalized BBM equation are given.
- 在给定的参数条件下,得到了该方程光滑孤立波解及周期行波解的所有可能的显式表达式.
期刊摘选
- Periodic change imposed on a controlled variable or a function by a controller.
- 通过控制器控制某一变量或函数进行周期性变化.
辞典例句
- 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.
《简明英汉词典》
- We study the property of complex periodic function, and obtain some correlation results.
- 对复周期函数的性质进行了一些研究, 得到了若干有关的结果.
期刊摘选
- The method can be used in the measurement of periodic and nonperiodic signal.
- 该方法可以被广泛地应用于高精度频率、时间及相位等信号的测量.
期刊摘选
- Periodic checks are carried out on the equipment.
- 设备定期进行检查。
《牛津高阶英汉双解词典》
