凍害 的英文怎麼說

Abiotic stresses such as drought, salt, cold and freezing exert severe influences on growth and development of plant

乾旱、鹽堿、低溫和凍害等非生物逆境嚴重影響了植物的生長和發育。

Freezing injury investigation of apricot and sweet cherry flowers

杏及大櫻桃花器官凍害調查

They have raised all kinds of engineering steps on roadbed against frozen disaster, for example, adopting the reasonable height of roadbed, building ventilative embankment, setting up the defense, burying hot metal stick, making use of stone to protect slope and laying thermal insulation and heat insulation material etc, laying eps is one of these special steps

針對路基凍害問題，人們對路基凍脹、融沉和溫度場特徵進行了廣泛研究，提出了各種路基抗凍害的工程措施，如選用採用合理的路堤高度，修築通風路堤，設置護道，埋設熱棒，利用片石護坡和鋪設保溫隔熱材料等特殊工程措施。

Prevention method and freezing damage of hydraulic structures at season freezing soil irrigation areas

季節凍土區灌區水工建築物凍害破壞原因及防治措施

The frozen damage of slab - foundation of channel irrigation structures in the northeast of china is the most serious and includes the general characteristics of frozen damage of the channel irrigation structures

我國凍土分佈面積極為廣闊，雖然東北地區渠系水工建築物的板基凍害最為嚴重，但也是其它地區的共性問題。

This paper unfolds engineering disposition and theoretical research of negative temperature high performance concrete ( nthpc ) with the damage of many factors motivation, the project background based on qing - zang railway engineering, which is one of four - emphasized engineering during the tenth five - plan. due to the difference of environment of construction and service between nthpc and ordinary concrete, and therefore durability of nthpc is required to higher level. at a first, nthpc must avoid frozen damage at early age and possess anti - freezing property at later period, in order to meet engineering practicable application need, and this are two emphasized and difficult problems, as for nthpc ; by means of mechanism analysis about deicing - agent ingredient and anti - freezing at early period, adopting composite technique routine of mineral addition + anti - freezing element + water - reducer4 - air - entraining + anti - erosion of steel component etc, based on orthogonal experimental approach, fd - 1 composite functional admixtu re was manufactured, which has more property and orientation on qing - zang railway

負溫混凝土由於和普通混凝土在施工環境及服役環境上存在的差異，因此表現為比普通混凝土更為較高的耐久性要求；負溫混凝土首先要避免早期的凍害以及具備長期抗凍性能，才能夠滿足工程實際應用的要求，這也是負溫混凝土必須解決的兩大技術關鍵；通過對目前常用防凍劑組分作用機理的分析研究及混凝土早期防凍機理探討，採用礦物外加劑+防凍組分+高效減水劑+引氣+阻銹組分功能復合的技術路線，通過正交試驗設計復配了適應青藏鐵路工程要求的專用多功能復合型外加劑fd - 1 ；並在此基礎上配製不同等級負溫高性能混凝土，開展一系列包括硫酸鹽侵蝕、氯離子滲透、抗凍融循環、收縮及耐磨性等耐久性能研究；通過對fd - 1組分和摻量的調整，優化負溫混凝土在施工特性、力學指標和耐久性三個方面的兼容、協調性。

Frost injury on cement concrete road surface and the prevention measures in gobi desert, northwest areas

西北戈壁灘地區水泥混凝土道面凍害及防止對策

Survey on freeze injury to jujube trees in zhangye municipality, kansu province in

2003年甘肅省張掖市棗樹凍害調查

Cause and regulation measures of frost damage for hydraulic structure

水工建築物凍害成因與防治措施

Study on the regular pattern of vertical distribution of freezing injury on the tree canopy of owari satsuma

尾張溫州蜜柑樹冠凍害的垂直分佈規律研究

From experimental result, i preliminarily know that eps is good thermal insulation material because the absorption of water is low and heat insulation is good, it is practicable at preserving temperature field of frozen earth roadbed and bringing frozen disaster under control ; second, according to the analysis of the eps that is applied into practical project, i have studied the practical effect which eps preserve roadbed temperature field, and the influence that was made after building field. i have get that eps can influence moisture content and frozen upper limit, through practical measuring data, i have studied freezing and expanding quantity and melting and submerging quantity during a complete frozen and melting cycle as well as have expanded and proved the practical application effect of eps with some reference significance to deep research of some connected problems. finally, through computer data analysis, setting up the analytical model of finite unit, i have simulated the temperature field of roadbed heat preservation, then expounded and proved that the height of embankment influenced the effect of thermal insulation material

其一是對聚苯乙烯泡沫塑料（ eps ）保溫板以及天然路基土層、路堤填料進行了室內試驗分析，結合國內外現在的有關科研成果，綜合確定其各項特徵參數；從試驗結果初步認識到聚苯乙烯泡沫塑料是一種吸水率低，隔熱性好的保溫材料，在凍土路基溫度場的保護和凍害治理方面是可行的；其二通過eps保溫板在現場工程實踐中的應用分析，研究了保溫板在保護路基土層溫度場的實際效果以及修築路堤后造成的影響，保溫板對土體含水量、凍結上限的影響，通過實測資料，研究了在一個完整的凍融周期內整個路基的凍脹量和融沉變形量，論證了保溫板的實際應用效果，對有關問題的進一步研究和相關工程設計具有參考意義；其三，通過計算機數值分析，建立有限元分析模型，對保溫路基的溫度場進行了模擬計算，論證了路堤高度對保溫材料效果的影響。

In the concrete test cubes damages under freeze thaw cycles, the theory of the frost damages is explained and freeze - thaw test is done. from test results, the thesis analyzes the main reasons of frost damages

在凍融作用下混凝土試件的損傷部分中，首先闡述了混凝土的凍害機理，然後進行混凝土的抗凍試驗，通過試驗結果分析影響混凝土抗凍性的主要因素。

This research is one part of a great scientific research project, which is supported by national ministry of water resources and electric power of china, the people ' s government of heilongjiang province and the water conservancy department of heilongjiang province

在凍害防治技術方面，具有重要的理論價值和現實指導意義。本研究是根據水電部、黑龍江省人民政府、黑龍江省水利廳批準的重大科研項目立題研究的。

Based on the investigation of freezing calamities of expressway in jilin province, dealing with the researching result of laboratory test by graduate student of jilin university construction engineering school, we give the stage summary of the research of season ' s frost swelling

摘要在整理吉林省近年高速公路凍害調查相關資料的基礎上，結合吉林大學建設工程學院室內的研究成果，對吉林省內高速公路的凍脹因素、路基凍害及法向凍脹力進行了綜合分析，並對其季節凍脹規律性研究做出了階段性綜述總結。

Construction of subgrade in seasonally frozen soil zone

融沉系數在季凍區高速公路路基凍害研究中的應用

Investigation of low air temperature and preliminary study of indexes of olive freeze harm in the winter of 2004 2005 in lianjiang county

2005年冬季連江縣低溫考察和橄欖樹凍害指標初探

Abstract : based on the test results of frost micro pore structure density distribution of high strength concrete at minus temperat ure ( hscmt ), the frost damage fiber bundle model of hscmt was buitl. the purpose is to study frost damage factor of hscmt in the future, to deduce lost efficiency p robability of hscmt and prevent hscmt from frost in cold weather

文摘:根據負溫高強混凝土凍結顯微孔結構密度分佈結果，建立了凍結損傷纖維束模型，為進一步研究負溫高強混凝土的凍結損傷基因，推斷負溫高強混凝土的失效概率，及負溫高強混凝土受凍害的防止打下基礎。

In the cold north china, the frost of concrete is one of the main reasons for the destroyed roads and bridges, it develops widely when de - icing salt is used

在寒冷的北方地區，混凝土凍害是道路和橋梁破壞的主要原因之一，當使用撒鹽除冰時，混凝土的普通凍害將急劇擴大。

Survey of ponkan seedling freeze injury in nianyushan plantation

鯰魚山林場?柑凍害調查

In permafrost areas, thaw - settlement problem is the main content for the frozen harmfulness study ; in the seasonally frozen soil areas, frozen expansion problem is considered most in order to prevent and father the frozen harmfulness for the groundwork, the thaw - settlement index is thought little relatively, but it has been investigated from the data of frozen harmfulness, the thaw - settlement behavior still has an active effect on the construction stability in the seasonally frozen soil areas

在多年凍土區，融沉問題是凍害研究的主要內容;在季節凍土地區，為了防治地基凍害問題，考慮最多的往往是凍脹問題，對融沉指標一般考慮的比較少，但是根據調查凍害資料來看，融沉性在季節凍土地區的建築物穩定性方面的應用仍然具有積極的意義。