Soil should also be tested for its pH level, a measure of the acid and alkaline balance.
土壤的PH 值也应该测量一下， PH水平是反映酸碱平衡的量度。
When acid rain falls on forest floors, it changes the ingredients - the 'PH level' - of the soil.
酸雨对森林地表层的土壤来说，它改变了原来的pH值'。
At a mean pH level of 7.8, calcified organisms begin to disappear, and non calcifying ones take over.
在pH平均值为7.8时，钙化生物体开始消失，代之而来的是非钙化生物体。
The citric acid in the juice alters the pH level in your mouth, killing the bacteria that cause bad breath.
果汁中的柠檬酸会调节口腔的PH值，杀死造成口气的细菌。
The preservatives used are Citric Acid to reduce the PH level, Potassium Sorbate to stop mould and Sodium Benzoate as an antimicrobial agent.
使用的防腐剂是柠檬酸，目的是为了降低PH值和山梨酸钾，以便防止霉变。另一种是苯甲酸钠，它是一种杀菌剂。
When used as a System, the formulas work together to effectively balance the pH level and penetrate ingredients to the layers of the skin--revealing superior results.
当使用为整套系列时，产品配方公式化相互作用下能够有效地平衡肌肤pH值，并且透过产品成分针对皮肤层需求–达到优良的效果。
A drop in pH on the level identified in the study could have some very harmful effects.
这项研究证实，pH值水平的下降可能有一些非常有害的影响。
It turns out that the body has a set level of pH that it likes to function in. Just as we all have a normal body temperature, we also have a normal pH for our tissues.
我们的身体有一个能起功能作用的pH水平，这就像我们有正常的体温，我们的组织液也有一个正常的pH值。
For example, as the atmospheric carbon-dioxide level in Hawaii goes up, the ph at a mid-ocean mooring about 450km to the north-west goes down (see chart).
例如在夏威夷，大气中二氧化碳浓度在升高，其西北方向约450公里处海洋监测点的PH值在下降(见图表)。
A drop in pH on the level identified in the study could have some very harmful effects. Acidic soil is paradise for nematodes, parasitic roundworms that destroy crops.
在这项研究中表明PH值的下降可以导致很多非常严重的后果，酸化土壤是那些毁坏作物的线虫和寄生蛔虫的天堂。
In addition, the investigation and analysis for the scientific research level of Ph. D. in engineering specialty also provide references for the training.
此外，对工科博士研究生科研水平的调查和分析，也为培养工作提供了参考意见。
At every education level, from high-school dropouts to Ph. D. s, women continue to earn less than their male peers.
在从高中辍学到博士的每一个教育水平上，女性收入持续低于同样情况的男性。
Graduate training leading to the Ph. d., an ancient German degree signifying the highest level of advanced scholarly attainment, was introduced.
对研究生进行培训就可获得博士学位，拥有一个古老的德国学位就意味在学术上达到了最高的水平。
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。
Are you willing to compete at the Ph. D. level?
你愿意在博士级别竞争么？
This paper was designed using a PLC and flowmeter, PH dollars, thermometer and the level of industrial components, such as sewage treatment control system.
本文主要设计了一种利用PLC与流量计、PH计、温度计和液位计等组成的工业污水处理控制系统。
Common measurement used in industry include flow rate, pressure, level, temperature, analytical measurements (such as pH, ORP and conductivity), and many others particular to special industries.
在工业中所使用的常规测量包括流量、压力、物位、温度、分析测量参数，如pH值、ORP和电导率，以及许多其他特殊工业中的特殊参数。
At the highest level, doing a master's project before diving into a Ph. D. dissertation is generally a good idea (and is mandatory at some schools).
在投身于博士论文之前完成硕士研究生的项目常常是个不错的注意（有些学校甚至规定如此）。
At the highest level, doing a master's project before diving into a Ph. D. dissertation is generally a good idea (and is mandatory at some schools).
在投身于博士论文之前完成硕士研究生的项目常常是个不错的注意（有些学校甚至规定如此）。
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