period n. 1. 时代;期;时期;期间;阶段。 2.〔the period〕现代,当代。 3.周期;【地质学;地理学】纪。 4.终结;句号。 5.【语法】长复合句,圆周句;【修辞学】掉尾句。 6.〔pl.〕美词丽句;华丽的词藻。 7.学时,课时,一节课;(比赛的)一节时间。 8.【医学】过程,周期。 9.〔pl.〕月经(期)。 10.【数学】(循环小数的)循环节。 11.【音乐】乐段。 the transitional period 过渡时期。 the warm-up period 【火箭】备射阶段。 the catchwords of the period 现代流行话。 a turned period (字母上面的)上点。 the incubation period (病的)潜伏期。 monthly period 月经。 at fixed periods 定期。 at stated periods 相隔一定时期;在一定时期。 come to a period 完结。 for a period of time 一个时期,一些时候。 put a period to sth. 使某事终止;取缔某事。 round a period 练句。 adj. 1.(家具、服装、建筑等)某一时代的。 2.(小说、戏剧等)逼真地描写某一特定历史时代的。 period furniture 仿古家具。 a period novel 描写特定历史时代的小说。 int. 〔口语〕就这样〔强调话已经讲完了,=That's it! That's final!〕。
Basing on the mission requirement of a new type radar , this paper analyses the weakness of traditional mtbf centered design concept , and presents a new design concept of reliability , maintainability , and supportability ( rms ) centered maintenance free operating period 摘要根据新型雷达任务的需要,对传统的以平均故障间隔时间为中心的设计思想的不足进行了分析,提出了基于无维修工作期的可靠性、维修性、保障性设计思想。
With considering the construction process of rcc gravity dam and temperature load during construction period , crack constitution model of concrete material is applied to simulated analysis of the temperature stress from construction period to operating period 摘要考虑碾压混凝土坝的实际成层浇筑过程和施工期的温度作用,采用混凝土开裂本构模型,利用三维瞬态有限元方法模拟仿真分析了大坝施工期至运行期的温度应力及综合应力。
By analyzing and calculating the structure and stress distribution status of foundation under time of completion , operating period and earthquake condition , the initial determination on the kinetic strength and liquefied possibility of underlying sand layer beneath the dam foundation are obtained 分析一计算结构及地基在竣工期、运行期和地震作用下变形和应力分布状况,并初步判断闸坝基础卜伏砂层的动弧度及液化的可能性。
Reorganized enterprises that arrange 80 % of the former enterprise ' s workers on duty and have an operating period of over 15 years may enjoy land rent refunding in full in the first seven years , and in half in the eighth to fifteenth years from the day of the effect of the contract of tenancy 改组企业安置被改组企业原由在岗职工80 %以上的,经营期在15年以上的,自租赁协议生效之日起,前七年全额返还土地租金,第八年至第十五年返还50 %土地租金。
Encourage foreign investment and building of alumina and auto manufacturing enterprises with above 15 - year operating periods and foreign capital of more than us $ 15 million , and aluminum product further processing , auto parts and components manufacturing , food processing enterprises with foreign capital of over us $ 5 million , as well as electronic information , new materials manufacturing and bioengineering enterprises with foreign capital of us $ 3 million ( hereinafter referred to as pillar foreign - invested enterprises ) 鼓励外商投资兴办经营期限15年以上、外在额在1500万美圆以上的氧化铝、汽车整车制造企业和外资额在500万美元以上的铝产品深加工、汽车零配件制造、食品加工企业以及外资额在300万美元的电子信息、新材料制造和生物工程企业(以下简称支柱型外商投资企业) 。
Hongjiadu hydraulic power plant is the only leading water storage reservoir of wujiang cascade hydraulic stations , which is a full - time storage reservoir . 2 * landslide body is distributed at the right side of downstream , which is just located in the region of energy dissipation . erosion gully may cut the bottom of the landslide body . there are roads on the top of the landslide body during the construction period and operating period 洪家渡水电站是乌江梯级水电站中唯一具有多年调节性能的“龙头”水库, 2 #塌滑体分布于坝址下游右岸,恰好位于泄洪消能防冲区内,冲坑将塌滑体下部切脚,而且施工期和运行期在其上都布置有公路,因此2 #塌滑体失稳将影响整个水电站的正常运行。
The foreign - invested enterprises of commercial retails , logistics , conference and show , tourism , finance or insurance set up by reorganization of this city ' s state - owned enterprises with an operating period of over 10 years may enjoy 50 % reward of the locally retained portion from the paid - in enterprise income tax by the benefited finance of this city in the first two years from the profit - making year 由改组国有企业设立的商业零售、物流、会展、旅游、金融、保险类外商投资企业,经营期在十年以上的,自获利年度起前两年,由本市受益财政按企业已交所得税地方留成部分的50 %奖励企业。
Accounting for the effects of imperfection and large displacement of arch , an approach for the stability analysis of arch bridge is presented , and a program is developed to predict the nonlinear buckling of arch the elastic lateral stability of the jiefang arch bridge in guangzhou during the construction phases and operating periods after its completion is analyzed the results show that the effects of initial deflection and large displacements on the critical load of lateral stability are significant , and that once the initial deflection and large displacement are taken into account , the values of the safety factor are smaller than those obtained by linear buckling analysis 考虑拱肋初始挠度等缺陷的影响,采用杆系结构大位移分析的有限元方法,建立了拱桥非线性稳定的计算方法,并编制了相应的计算程序文中计算了解放大桥钢管混凝土拱桥在施工阶段及成桥后运营期间的弹性侧倾稳定结果表明:考虑拱肋初始挠度和结构大位移影响后,拱桥的非线性侧倾稳定安全系数比按线性稳定计算值低
Based on the test result of hydraulic model of a project , this paper analyzes the influences of gate operation during operating period , combined operation of hydro - generation sets and the length of guide wall on navigable flow condition in entrance area , and proposes the operation mode of the hydro - junction for improving navigation flow condition 摘要根据实际工程的水工模型试验资料,分析枢纽工程运行期的闸门调度、机组组合运行和导航墙长度对口门区通航水流的影响,提出改善通航水流条件的枢纽运行方式。
In our country , most of bridges were built in 1960s or 1970s , which were based on that time traffic discharge and development planning , so design criterion of these bridges were very lower . in addition , it was inevitable to bring about cracks > concrete rupture , steel rust ^ honeycomb and water proof layer failure , because some established bridges were built by poor construction and maintenance during the course of operating period . all above mentioned lead to durability and bearing capacity could n ' t gain to design standard 由于我国很多桥梁建于上个世纪六、七十年代,基于当时的车流量和各方面的发展规划,桥梁设计等级普遍偏低;另外,某些既有桥梁由于施工质量差和运营期间维护不到位,不可避免地会产生裂缝、混凝土破损、钢筋锈蚀、蜂窝及防水层失效等缺陷,从而导致耐久性及承载力达不到设计要求。