key aggregate 中文意思是什麼
key aggregate
解釋
嵌縫集料-
The results are summarized below : 1 ) study on soil science indicates that soil granular structure is the focus adjuster for soil fertility and it affects the space, water - grasp, aeration and anti - erosion of soil. and the percentage of aggregate is one of the key index that decides the speed and extent of soil erosion, hardening and degeneration because the soil degeneration will first lead to the disappearance of crumb - structure. so it is very important that the physical course and character of soil in different land use pattern are realized
現將主要結果摘要如下： l 、士壤學研究表明，團粒結構是土壤肥力的中心調節器，影響著土壤的空隙性、持水性、通透性和抗蝕性；任何土壤的退化首先將表現出團粒結構的消失；團聚體百分比是決定土壤侵蝕、板結等物理過程速度和幅度的關鍵指標之一，了解不同土地利用和土壤管理方式的物理過程和性質相當重要。 -
Based on the principles of designs of self - compacting and light aggregate concrete mix, sclc of lc30 - lc50 was developed by using absolute volume method. the main factors affecting the workability of sclc were studied by adopting the modified l - 800 fluidity instrument. the results indicate that the key techniques insuring good workability of sclc are about 30 % first - grade fly ash, about 50 % volume sand ratio, 2 % ~ 6 % dosages of silicon fume and compounded superplasticicizers with viscous ingredient
採用改進l - 800流動儀，研究了影響lc40自密實輕骨料高性能混凝土工作性的主要因素，結果表明：粉煤灰摻量保持30左右，硅灰摻量為2 6 ，體積砂率為50左右和摻加具有粘塑組分的復合高效減水劑是保證sclc拌合物具有較好工作性的關鍵。 -
Secondly, making use of the road condition and date of different districts of hebei province, the main diseases of road are analyzed, and combined with the local climate, the factors that cause these diseases are analyzed too. this article discusses the factors, including the quality of asphalt and aggregate, gradation and bituminous quantity, effect on the performance of asphalt mixture. finally, through some new key technical index, including the high - temperature rut resistance, low - temperature crack resistance, and water stability of asphalt pavement, the material types, material grade and pavement structure have been put forward to be fit for asphalt pavements of every area of hebei province
其次，通過對全省各地市的路況、氣候等資料進行實地調查，利用收集上來的資料分析河北省的主要道路病害，並結合當地的氣候情況，分析病害的主要類型及特徵，找出病害的主導因素，並利用一些新的關鍵性指標（如試驗方法、評定指標等）來分析瀝青路面的高溫抗車轍性、低溫抗裂性和水穩定性等瀝青結合料和瀝青混合料的相關路用性能。 -
Users can choose an aggregate option and select a key for aggregation
用戶可以選擇聚合選項，並為聚合選擇一個鍵。 -
Qin jia yuan media services company limited " qin jia yuan " or the " company " ; hkex : 2366 announced the establishment of long - term collaboration with eight key tv media in mainland china for tv drama production, procurement and sales, and distribution. the collaboration will initially call for an aggregate investment of rmb300 million for the production or procurement of 538 to 600 hours of tv drama in 2007
勤緣媒體服務有限公司勤緣或集團股份編號： 2366正式宣布與國內八大電視媒體達成長期之電視劇拍制購銷及發行合作， 07年度計畫投拍及購買約共538至600小時電視劇，總投資金額預算達人民幣三億元。
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