Specially, the axial tensile strength of the interface of the new and old concrete has reached above 2. 40mpa, greatly surpassing the preconcert goal ( > 1. 0mpa ), and its flexural strength also above 5. 80mpa, having surpassed the preconcert target and the standard request ( 4. 50mpa ). ( 2 ) after hardening 4h and 8h the compressive strength of the patched concrete is bigger than 20 mpa, which can satisfy the request of fast patching. ( 3 ) the ych color material, which is mixed into rapid sulfoaluminate cement - concrete patching material, can take better effect and avoid chromatism on the appearance of new - old concrete
特別是新老混凝土界面的軸向抗拉強度已達2 . 40mpa以上,大大超過原定目標(大於1 . 0mpa ) ,其界面抗折強度也在5 . 80mpa以上,也已超過原定
指標及規范要求(大於或等於4 . 50mpa ) ; ( 2 )修補混凝土硬化后4h 、 8h抗壓強度大於20mpa ,能滿足快速修補的要求; ( 3 )在快硬硫鋁酸
鹽水泥混凝土修補材料中摻入自配的ych調色材料,能較好地起到調色作用,避免新老混凝土表面色差。
A general review of development and status in quo of salt cavern use and relative studies is given and the advantages of salt cavern used for storage is analyzed in this dissertation. then the strategic importance of salt cavern use and the gap on salt cavern use and relative studies between our country and western developed countries is pointed out
本文回顧了國內外巖
鹽溶腔利用以及相關方面研究的發展和現狀,分析了巖
鹽溶腔用於存儲的優勢,
指出了巖
鹽溶腔利用的重要戰略意義和我國在巖
鹽溶腔利用以及相關方面的研究與世界先進水平的差距。
Water quality - determination of permanganate index
水質.高錳酸
鹽指數的測定
This article discusses the acidic potassium permanganate method of permanganate index from the following aspects : heating time, titrate temperature and titrate speed, end point of titration
摘要文章對高錳酸
鹽指數加熱時間、滴定溫度、速度、滴定終點的控制進行了探討。
According to the method ( 1 ), bio - assessment criteria of bi for stream was preliminary determined, < 2. 97, excellent ; 2. 98 - 4. 72, good ; 4. 73 - 6. 48, good - fair ; 6. 49 - 2. 84, fair ; >
與理化
指標關系的分析表明,與總磷h 、化學需氧量codcr和高錳酸
鹽指數iinn有較高的相關性, r值分別為0 93 , 0
Erlongshan reservoir water quality was evaluated for class and class by monitoring continuously indexes and was unable to meet the requirement of central drinking water source due to higher cod ( subscript mn ), tn and tp and eutrophic environment
摘要連續監測和分析了二龍山水庫的水質,對水污染程度進行了評價,水庫高錳酸
鹽指數、總氮和總磷超標嚴重,呈現富營養化狀態,總體水質為類和類,已無法滿足集中式生活飲用水水源地的水質要求。
Determination of codmn by digestion with microwave
微波消解法測定高錳酸
鹽指數
The technical requirement for water quality automatic analyzer of permanganate index
高錳酸
鹽指數水質自動分析儀技術要求
Iso 8467 : 1993 ; water quality - determination of permanganate index iso 8467 : 1993 ; german version en iso 8467 : 1995
水質.高錳酸
鹽指數的測定
Water quality - physical, chemical and biochemical methods - method for the determination of chloride via a silver nitrate titration with chromate indicator mohr ' s method
水質.第2部分:物理化學和生物化學方法.第37節:用鉻酸
鹽指示劑通過硝酸銀滴定測定氯化物法
The main factors influencing the accuracy of the determination of permanganate index, include acidity of sample, water distilled water quality, potassium permanganate concentration, water bath temperature and titration time
摘要影響高錳酸
鹽指數測定準確性的主要因素有樣品酸度、蒸餾水水質、高錳酸鉀溶液濃度、水浴加熱溫度和滴定時間。
Through the tests of standard samples, the degree of affecting permanganate index by these 5 factors are investigated
通過環境標準樣品的分析試驗,考察這5個因素對高錳酸
鹽指數的影響程度。
Abstract : if you want to get exait and reliable determination value of permanganate index, it must carry on quality control and data processing
文摘:在環境水的測定中欲得到可靠和準確的高錳酸
鹽指數測定值,就必須進行質量控制和數據處理
Sodium is a regular part of our food supply. it is found naturally in meats, nuts, grains, fruits, vegetables, and dairy products in low amounts
如果鈉
鹽指的是那種炒菜用的白色晶體的話,不吃沒問題,我們日常的食物里有很多高鈉的食物。
Water quality - determination of chloride - silver nitrate titration with chromate indicator mohr ' s method
水質.氯化物的測定.用鉻酸鹽指示劑的硝酸銀滴定法