1)winter[英]['w?nt?(r)][美]['w?nt?]冬期
1.Key points for construction management of concrete engineering in winter;冬期混凝土工程施工管理要点
2.Cold-process construction for external and internal wall plastering in winter;冬期内外墙面抹灰冷作施工
英文短句/例句
1.Specification for winter construction of building engineering建筑工程冬期施工规程
2.Climate Change and its Impacts on Duration of Winter Wheat Overwintering Stage in Henan Province河南省气候变化及其对冬小麦越冬期的影响
3.Artificial Conservation Technology of Adult Synonycha grandis During Overwintering Stage大突肩瓢虫成虫越冬期人工保种技术
4.Diversity of Wild Plant in the Wetland of West Dongting Lake Investigated during the Overwintering西洞庭湖湿地越冬期野生植物多样性
5.Phenotypic Flexibility Changes in Body Structure of Wintering Tringa stagnatilisr泽鹬越冬期间机体结构表型弹性变化
6.Assurance Measures of the Quality for Commodity Concrete during Winter Construction商品混凝土冬期施工的质量保证措施
7.Winter Construction Technology at Guangyang Beam Fabricating Yard in Beijing-Shanghai High-speed Railway京沪高速铁路广阳梁场冬期施工技术
8.The distribution patterns of diseased plants seriousness in overwintering period and flowering stage were of aggregation distribution.病级分布在越冬期和盛花期均为聚集分布。
9.he dreaded the storminess of the North Atlantic in winter.他害怕北大西洋冬天的风暴期。
10.Every year, on a wintry Sunday morning,每年,在一个冬季的星期天早晨,
11.The autumn or winter term start in September.秋季或冬季学期九月份开始。
12.Avoid wildlife during sensitive times: mating, nesting, raising young, or winter.避开敏感时节:交配期、巢、雏,或冬季。
13.Several people were found lying dead in the street during the bigfreeze last winter.去冬严寒期街上发现好几具尸体。
14.Well-to-do people often have holidays in the winter as well as the summer.富人不仅夏天常有假期,冬天也常有。
15.Study on Prolonging the Grass Growing Season on Athletic Field in Winter in Northern China;延长北方运动场草坪冬季绿期的研究
16.Short-term Load Prediction of Natural Gas in Winter in Xi'an City西安市天然气冬季短期负荷预测研究
17.Effects of Winter Drought on Growth and Development of Wheat Seedlings冬季干旱对小麦苗期生长发育的影响
18.Growth and Required Accumulated Temperature of Winter Wheat under Different Sowing Time播期对冬小麦生长及所需积温的影响
相关短句/例句
winter construction冬期施工
1.Brief description on the winter construction of the concrete engineering;简述混凝土工程冬期施工
2.Control of temperature cracks in winter construction of mass concrete foundation;大体积混凝土基础冬期施工的温度裂缝控制
3.Discussion on strength calculation measure of concrete in winter construction;冬期施工中对混凝土强度推算法的探讨
3)Wintering period越冬期
4)winter weather冬期气候
5)construction in winter冬期施工
1.On quality control of concrete construction in winter;浅谈混凝土冬期施工的质量控制
2.Big volume concrete construction in winter;基础底板大体积混凝土冬期施工
3.It analyzes the principle of concrete construction in winter and introduces the construction technological requirements to material,material heating,the mix,translation and pouring of concrete in winter,and discusses the multiple concrete construction methods in winter,and the same time it indicates the construction methods should be used in order to suit the project practical situation.分析了混凝土冬期施工的原理,介绍了冬期施工对材料、材料加热、混凝土的搅拌、运输和浇筑的工艺要求,论述了混凝土的多种冬期施工方法,指出应视工程实际情况,综合应用施工法。
6)dynamic compaction in winter冬期强夯
延伸阅读
混凝土冬期施工混凝土冬期施工construction of concrete in winter hunn一ngtu dongqi shigong混凝土冬期施工(。onstruetion of。onerete inwinter)在室外日平均气温连续5天低于5℃时的混凝土工程施工。新浇筑的混凝土在导C环境下养护,强度增长很慢。如遇负温度,水泥的水化作用受到阻碍,其中游离水分冻结,在混凝土内形成冰聚体,并在骨料周围结成冰膜,致使混凝土体积增大而冻裂。混凝土初期受冻后,于常温下强度仍能增长,但已不能恢复到未遭冻结的水平。混凝土遭受冻结的时间愈早,其强度损失愈大,反复冻结,强度损失更为严重。对新浇筑的混凝土在受冻前达到多大强度(受冻临界强度)才能避免冻害,各国都做过大量试验。中国现行规范规定,硅酸盐水泥或普通硅酸盐水泥配制的混凝土其受冻临界强度应为设计标号的30%,矿渣硅酸盐水泥配制的混凝土应为设计标号的40%。但CS及CS以下的混凝土,其受冻临界强度不得低于SMPa。在混凝土冬期施工中,要采取措施,使新浇混凝土在硬化过程中不受冻害,水泥水化作用能持续进行,混凝土的强度能达到或超过受冻临界强度。由于冬期施工需消耗较多材料和热能,增加工程造价,安排项目时,应从技术、质量、经济各方面统筹考虑。对不宜进行冬期施工的工程项目,要尽可能安排在入冬前或转暖后施工。对不得不在冬期施工的项目,应提前做好各方面准备,调查本地区历年气候变化特点、能源及材料状况以及混凝土结构特点,进行原材料和混凝土搅拌、运输、养护过程的热工计算,在混凝土制备、浇筑、养护等几个环节上采取防冻害措施。 混凝土制备为防止混凝土早期遭受冻害,制备混凝土时应考虑:(l)改善混凝土的配合比,优先选用硅酸盐水泥或普通硅酸盐水泥,水泥标号应不低于325号,水泥用量不得少于300kg/m3,水灰比不应大于0.60。(2)加热水及骨料,加热温度由热工计算确定。当加热水尚不足以获得所需要的混凝土温度时,才采取对骨料进行加热的办法。水泥加热不易均匀,其局部过热会使水泥凝结,一般应提前运入暖棚内存放。(3)拌制混凝土时,骨料中不得带有冰雪及冻团,并注意其投入顺序,应使水先与骨料接触、待水温降下来后,再投入水泥。切忌热水直接与水泥接触。(4)为了满足不同温度原材料的热交换,拌合时间应比常温下延长50%。 混凝土浇筑混凝土运输及浇筑过程中应有保温措施,浇筑前应将模板和钢筋上的冰雪和污垢清除。一个基础或一个部位的混凝土宜连续进行浇筑,并注意随浇筑随搜盖。一般情况下,浇筑后的混凝土温度不应低于ZC。 混凝土养护常用的方法有蓄热法、电热法、蒸气加热法、暖棚法、掺外加剂法等。
