ph drop 中文意思是什麼
ph drop
解釋
ph值減少-
To determine the vitriolic solute quality mark in sewage does following tests : take 10 grams this sewage, chase to the middle of sewage drop join solute quality mark to change sodium solution for the oxyhydrogen of 4 %, if plan institute is shown, the ph change of the quality of solution of natrium of oxidation of place drop hydrogenation and solution concerns
為測定污水中硫酸的溶質質量分數做如下實驗：取10克該污水，向污水中逐滴加入溶質質量分數為4 %的氫氧化鈉溶液，所滴加氫氧化鈉溶液的質量與溶液的ph變化關系如圖所示。 -
Primary culture of rat preadipocyte were prepared from the epididymal, inguinal and perirenal the fat pads of male normal, healthy, 15 - 20 days sprague - dawley rats. the preadipocyte grew better under the condition of 37, 95 % humidity, 5 % co2, ph 7. 0 - 7. 2, centrifuged at 1000r / min, m199medium, and 10 % fetal bo vine serum, seeded at a density of 4 l04, 5 l04, / cm2. oil red o staining was the special method to distinguish adipocyte from other cells, gimsa and he could determine the stage of the adiopcyte differentiation through the number of lipid drop, size and the position of the nucleolus of the staining fat cell
經過多次實驗，確定本實驗室大鼠前體脂肪細胞的最佳培養條件是：溫度為37 ，濕度為95 ， co _ 2濃度為5 ， ph值為7 . 0 7 . 2 ，離心力為1000r / min ，培養基為m _ （ 199 ）培養基，胎牛血清濃度為10 ，合適細胞接種密度為4 10 ~ 4 、 5 10 ~ 4個/ cm ~ 2 ，染色結果表明：油紅o染色是鑒定脂肪細胞的特異方法， gimsa和he染色可根據不同區域染色程度、著色差別判斷細胞核的位置及脂滴大小、多少，觀察大鼠前體脂肪細胞分化過程中的形態變化，進而確定脂肪細胞的分化階段。 -
And the value drop to the lowest at ph = 0. 8. as the increase of heat treatment temperature, the pore size distribution peak of sio2 microspheres is very narrow, meanwhile the specific surface area is the smallest before 160 c. the polymer template is removed at 350 c, so the pore structure of sio2 particles has a big change which involve the increase of specific surface area and the broaden of pore size distribution peak. with the continuous raise of temperature the sio2 network will shrink little, as a result the average pore size will decrease, but the specific surface area has no obvious change
結果發現：二氧化硅膠體顆粒均勻分佈於脲醛聚合物網路中，煅燒去除有機模板后微球表面變粗糙，而粒徑沒有明顯變化； ph值較小時，復合微球中聚合物含量較大，而ph值較大時，得到復合微球結構鬆散，因此熱處理后的二氧化硅微球孔容及平均孔徑都較大，而在ph = 0 . 8時，得到最小值；武漢理工大學碩士學位論文隨著熱處理溫度的變化，小於160時，空分佈較窄，而比表面積較小，在350時，由於有機模板的去除，微球孔結構發生突變，比表面積明顯增大，而孔徑分佈變寬，溫度繼續升高時，二氧化硅網路發生收縮，平均孔徑變小而比表面積由於有機炭化物的完全去除沒有太大變化;微球中的微孔在熱處理過程中處于平衡狀態，分佈沒有太大變化。 -
A problem related to nitrification is a drop in ph for the system due to the formation of nitric acid.
和硝化作用有關的一個問題就是由於生成硝酸而使系統內的PH值降低。 -
( 2 ) the kd values of tc on granite are almost unchanged with the increase of ph value under aerobic condition, while the kd values increas firstly, then drop under anaerobic condition
（ 2 ）大氣條件下， tc在花崗巖上吸附的kd值隨ph值升高變化不明顯；低氧條件下， kd值隨ph值升高先增大后減小。
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