守时,time keeping
1)time keeping守时
1.With the analysis of ADEV and HDEV for NTSC s more than 20 atomic clocks as well as the BIPM publications of rate and weight,the usability of a clock in high precision time keeping is discussed.该文根据NTSC 20多台原子钟的ADEV和HDEV的分析、BIPM发表的TAI系统中原子钟的速率公报和权重报告,讨论了在高精度守时系统中对原子钟频率稳定度的要求。
2.The combination of frequency standards of NTSC s time keeping system,the generation and maintenance of UTC(NTSC),and the development of the TA(NTSC) algorithm are presented briefly.简要介绍了当前国家授时中心的守时钟组成,地方协调世界时UTC(NTSC)的产生和保持,以及原子时TA(NTSC)算法的研究等。
3.Time keeping and dissemination are two main parts in standard time service field.时间服务工作包括守时和授时两个主要的方面,而原子钟是守时系统的基础,原子时的准确度和稳定度主要取决于守时钟的数量和个体钟的性能指标。
英文短句/例句

1.Research on Defense Principles from Attack to Defense in Football Match足球比赛由攻转守时刻防守原则研究
2.A woman on time be one In nine .守时的女性,九居其一。
3.She lays great stress on punctuality, ie regards it as very important.她非常强调要遵守时刻.
4.Punctuality is the soul of business .守时是事业的主宰。
5.A woman on time is one in nine.守时的女生,九居其一。
6.She's obsessive about punctuality.她对守时十分固执.
7.I always go to work on time. Punctuality is my strength.我总是准时上班,守时是我的优点。
8.A period of wakefulness, especially one observed as a religious vigil.守夜尤指一个作宗教守夜醒着的时间
9.All teenagers kick over the traces at some time.有时候年轻人不守常规。
10.Be sure to keep to this timetable一定要遵守这个时间表。
11.House Rules [Provisional Legislative Council]内务守则〔临时立法会〕
12.I kept watch while they slept.当他们睡觉时我守备着。
13.The night watchman makes his rounds every hour.守夜者每小时巡回一次。
14.excessive possession of ball(守门员)持球时间过长
15.keen at wakes or funerals在守丧或送葬时痛哭
16.When Zhang Fei volünteered to take the task(the defence of Xuzhou City),这时,张飞请求留守徐州。
17.She is very conservative and does not like modern fashions.她很守旧,不喜欢时髦。
18.a time for search and a time for loss; a time to keep and a time to give away;寻找有时,失落有时。保守有时,舍弃有时。
相关短句/例句

Timekeeping[英]['ta?mki:p??][美]['ta?m'kip??]守时
1.The performance of timekeeping system is one of the main factors which affects stability of the UTC(K).时间比对统性能是直接影响守时结果的主要因素之一。
2.In the design, FPGA is used to process timing signal, realizing such requirements as the identification of combat system on multi-channel time service signals, timekeeping and time precision,and meeting the demands of different systems on unify-time function.设计中利用FPGA完成对时统信号的处理,实现了作战系统对多路授时信号的识别,自守时以及时间精度等的要求,同时满足了不同系统对时统功能的需求,对各主要功能部分的逻辑设计做了详细介绍。
3)abstinent time操守时间
1.Objective: To reduce the relapse rate and prolong abstinent time of the drug addicts by the intervention on their relatives and to explore the integrative intervention model on drug abuse.目的:通过改变吸毒人员家属配合帮教的心理行为延长脱毒人员的操守时间,提高预防复吸的效果,探索预防复吸的综合干预模式。
2.Objective: To explore an effective psychological intervention to reduce relapse rate and prolong abstinent time of female addicts.目的:探索较为有效的综合性的院内心理干预方法,以降低女性戒毒人员的复吸率和延长其操守时间。
4)backup clock守时钟
1., a high quality backup clock for PMU is proposed in this paper according to the principle of digital phase-locked loop (DPLL) using complex programmable logic device (CPLD) and high-accuracy crystal oscillator.针对由于气候、故障及其他因素可能造成秒脉冲失效的情况,采用数字锁相环 技术,利用复杂可编程逻辑器件(CPLD)及高精度晶振,研制了一种高性能的PMU守时钟。
5)auto time determination自主守时
6)act on the laws of nature顺天守时
1.The thought of agricultural science summized by Confucianists prior to the Qin dynasty which mainly contained:"plant crops according to soil","act on the laws of nature","harness soil in order to bumper harvest","apply fertilizer properly"etc,is valuable for us to cherish.由先秦儒家总结和凝炼出的以"相地而农"、"顺天守时"、"化土物地"、"田肥以易"等为主要内容的农业科技思想尤其值得珍视。
延伸阅读

守时守时time keeping S伙浏Shi守时(t诫keep吨)采用连续运转、高度稳定的原子钟建立和保持时标。为保证连续性和稳定性,至少要用3台钟。钟之间要进行相互比对,即测量它们之间的时差,当某台钟发生时刻或速率突跳时能自动检侧。时钟的工作环境要求恒温和连续不停地供电。国际上规定,各守时实验室保持的时标也都是协调世界时,以符号U】℃(k)表示,其中k为各实验室的代号,如中国计1科学研究院(MM)保持的国家标准时间的代号为U】℃(NIM)。各国家或地区使用的标准时间只是在t兀C(k)上加或减几个小时。守时所用的原子钟大都为艳原子钟,少量为氢原子钟,或两种同时使用,氢原子钟的稳定度和工作寿命都比艳原子钟好,但价格贵,维护比较复杂。为提高U代:(k)的稳定性,采用多台钟的守时实验室大都用加权平均的算法得出自己的U】℃(k),其稳定度要优于单台钟。钟的数t愈多,价℃(k)的稳定度就愈高,当然所花的费用也愈大。 (马凤鸣)