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429.
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There are multiple way to measure the pH-Value of an solution. With a litmus paper it is easy to get a pretty precise pH-Value. The color indicates the value. If you need a more precise value you can for example use a pH-Meter which is using the conductivity of a solution.
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有很多种办法测试溶液的PH值。应用石蕊试纸可以轻易地到一个精确的PH值。试纸的颜色指示了这个值。如果您需要一个更精确的值，您可以使用PH计，它采用的是通过PH电极测量溶液的电导率，并折算出PH值的方法。
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Translated by
yuanjiayj
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Reviewed by
yjjart
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430.
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Short-stem Funnel
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i18n: file: data/tools.xml:204
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短颈漏斗
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:1432
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431.
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A funnel is used in the laboratory to fill powder into something.
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短颈漏斗在实验室中用于将粉末加入到一些东西中。
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Translated by
yuanjiayj
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Reviewed by
yjjart
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432.
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Buret
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i18n: file: data/tools.xml:209
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滴定管
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:2638
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433.
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A buret is used to titrate liquids. The buret is filled with a specified volume of a liquid. Below it a container like an Erlenmeyer flask is placed. By opening the valve the liquid in the container will be titrated. High-quality buret have a venting-mechanism with which they can be very easily refilled with the exact volume for which the buret is calibrated.
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i18n: file: data/tools.xml:210
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滴定管用于液体滴定。首先在滴定管中加入一定体积的液体。在它的下方放置一个锥形瓶。只要打开滴定管的阀门，液体就可以滴入锥形瓶。高级的滴定管都有一种抽液功能使它们每次在滴定完毕时可以很精确地将滴定液加到精确的刻度。
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:1438
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434.
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Beaker
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i18n: file: data/tools.xml:214
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烧杯
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:2642
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435.
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Beakers are used in many places for a lot of tasks. They are used to store chemicals are to perform chemical reactions. They are also often used for titrations.
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i18n: file: data/tools.xml:215
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烧杯可以用在化学工作的很多地方。它们可以被用于存贮化学品以便完成反应。它们也可用于滴定。
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:1442
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436.
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DSC (Differencial Scanning Calorimetry)
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i18n: file: data/tools.xml:219
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DSC(差热仪)
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Translated and reviewed by
yjjart
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DSC(差示扫描热量测定仪)
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Suggested by
yuanjiayj
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Located in
rc.cpp:1444
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437.
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The DSC measures the heat flow volume of a compound. This value is very specific for every kind of matter. Thus, the DSC is used to identify chemicals or to describe them.
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i18n: file: data/tools.xml:220
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差热仪用于测量热通量，每种物质的热通量都是特定的。测定结果可为材料的特征分析提供颇有价值的信息。
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Translated and reviewed by
yjjart
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差示扫描热量测定仪用于测量热通量，每种物质的热通量都是特定的。测定结果可为材料的特征分析提供颇有价值的信息。
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Suggested by
yuanjiayj
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Located in
rc.cpp:1446
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438.
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Dewar vessel
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i18n: file: data/tools.xml:224
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杜瓦瓶
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:1448
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