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For cast iron pumps, the PH value of medium ranging within 5-9. 铸铁材质的泵,介质PH值在5-9范围内。
pH value of condensate 冷凝液的pH值
The number of rhizobia decreased with the pH value of soil reducing. 在不同酸性土壤悬液中，土壤悬液酸性降低，根瘤菌数目随之减少。
The COD of simulated wastewater with Aniline aerofloat can hardly be reduced by adjusting the pH value of the solution. 通过调节pH值,也很难降低废水的COD。
The isolating conditions of the CPP were: pH value of hydrolysate 6.5 and precipitation time 2-4 hours. CPP的沉淀分离条件为：沉淀pH为6.;5，沉淀时间2-4小时。
All these microspheres showed a restively higher drug loading efficiency at a pH value of about 7. 该制备方法具有一定的普适性，利用该方法可以制备各种无机粒子为核有机聚合物为壳的复合微球，无机粒子可以是其它金属（或其合金）或金属氧化物粒子，通过在其表面覆盖二氧化硅并进一步用硅烷偶联修饰，通过单体的沉淀聚合可以制得复合微球，壳层聚合物不限于聚（N-异丙基丙烯酰胺），也可以是其它聚合物。
The optimum preparation conditions of copper arsenite are as follows: pH value of solution is 8. 利用含砷废酸制备亚砷酸铜,并将所得亚砷酸铜应用到铜电解液的净化。
TS-1 was synthesized using TPABr as the template and ammonia, n-Butylamine, TEAOH etc. were used to adjust the pH value of the gel. 本论文以TPABr为模板剂，采用氨水、正丁胺、TEAOH等调节凝胶pH值，合成了钛硅分子筛TS-1。
Unreasonable setting of pH value of the flotation operation stage resulted in low copper grade and recovery during its trial operation. 建厂设计时，分离浮选作业的pH值设定不尽合理，致使试生产阶段铜精矿的品位低，回收率低。
The pH value of the solution, the concentration of Bup, the reaction temperature can make important influence on the electrochemical reduction system. 与此同时,Bup的浓度大小、溶液pH值的变化及不同的反应温度对Bup电还原都有影响。
OBJECTIVE:To study the most stable pH value of rifampicin solution and effects of three kinds of buffers on the stability of rifampicin solution. 目的：用实验法测出利福平水溶液最稳定pH及3种缓冲剂对利福平水溶液稳定性的影响。
The concen tration of fluorine ions, pH value of solution, voltage, pH value of solution, voltage (mV) and temperature are displayed digitally. 用数字显示氟离子浓度、溶液pH值、毫伏电压及使用温度。
A little crack detracts from the value of the vase. 小小的裂痕减损那个花瓶的价值。
The total particulate matter (TPM) on Cambridge pad was extracted with CO-2 free water and the pH value of aqueous extraction was measured by pH meter. 捕集在剑桥滤片上的卷烟主流烟气粒相物用去CO2 的蒸馏水提取 ,用精密 pH值计测量水提取液的 pH值。
HLB value of surfactants R(-OCH 2CH 2)- nOCH 2COOMe with the different R, n and pH value are different , so their uses are different. 表面活性剂 R( - OCH2 CH2 )- n OCH2 COOMe因 R、n和 p H值不同 ,它们的 HLB值不同 ,用途也不同。
The effect of PH value of the system and the amount of GA on the time of glomeration and swelling ratio of PVA beads were studied. 同时还讨论了体系PH值、GA用量等因素对PVA成球时间及球珠溶胀性能的影响。
Consequently, rutile transformed into brookite up to the pH value of 10 and brookite became more while continuously increasing the amount of HMT. 当pH值达到10时，金红石相转变为板钛矿相，随着六亚甲基四胺加入量的继续增多，板钛矿相也逐渐增多。
The crystallization conditions of rhamnose: Add some little crystals of rhamnose, adjusting the pH value of 1.5, crystallize for 24 hour. 鼠李糖结晶的条件为加入鼠李糖细晶诱导结晶，调节pH值为1.;5，结晶24h。
The value of your assistance is inestimable. 阁下鼎立相助之功不可胜言。
The effects of iron level in diatomite and pH value of beer on antioxidative activity of beer is studied in this paper by DPPH-spectroscopy. 本文采用DPPH分光光度法,研究了硅藻土的铁离子含量和啤酒pH值在过滤阶段对啤酒抗氧化力的影响。