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421.
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The water jet pump has two entry pipes and one exit, and consists, in principle, of two pipes one inside the other. At the water entry a water jet shoots under full pressure out of a nozzle into a slightly larger pipe. The water jet thereby carries away air or fluid from the second entry. <br> This is caused by the negative pressure in a drifting fluid, and thus it is an application of the hydrodynamic paradox (objects close to drifting fluids are aspirated instead of being pushed away).
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i18n: file: data/tools.xml:23
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水冲泵有两根进口管和一根出口管。当水从喷水口以全部冲力灌入稍大的管道时，可使得空气和其它流体由于负压在另一个进口被吸入。<br>它采用的是水负压的一个应用。
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Translated by
Jonathan Riddell
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Located in
rc.cpp:2491
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422.
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Refractometer
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i18n: file: data/tools.xml:27
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折射计
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Translated by
yuanjiayj
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Reviewed by
Jonathan Riddell
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Located in
rc.cpp:2493
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423.
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With a refractometer the refractive index of optical media is determined. If the refractive index of a chemical is known it can be used after a synthesis to determine the sample's purity or to audit the synthesis' success.
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i18n: file: data/tools.xml:28
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折射计用于测量光学媒介的折射率。不同的化学品有不同的折射率。在化学合成后常用折射计测定样品的折射率以确定它的纯度或者间接地审查化学合成是否成功。
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Translated by
yuanjiayj
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Reviewed by
Tao Wei
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Located in
rc.cpp:2495
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424.
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Mortar
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i18n: file: data/tools.xml:32
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研钵
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:2497
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425.
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A mortar is used for manually grinding solids. It can also be used to homogenize a mixture of powders by grinding. A club-shaped tool known as a pestle is used with the mortar for grinding.
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i18n: file: data/tools.xml:33
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研钵用于手动研碎固体。它可以用在粉末的均匀混合上。当然在研磨时要配上杵。
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Translated by
Lie Ex
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Located in
rc.cpp:2499
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426.
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Heating Coil
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i18n: file: data/tools.xml:37
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加热盘管
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:2501
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427.
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Heating coils are used to heat flasks and other containers. Multiple heating coils can be connected with a thermometer so that the heat will not exceed a specified temperature. It is possible to use a magnetic field inside the heating coil to stir fluids with a magnetic stirrer. This will homogenize the fluid in terms of temperature and composition.
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i18n: file: data/tools.xml:38
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加热盘管可以用于加热烧瓶及其它容器。复合加热盘管可以连接一个温度计，这样当超过某一温度时温度器就会停止工作。加热盘管内部还可以嵌入一个磁场，这样就可以在使用时用磁力搅拌器搅拌流体了。这样可以使流体在温度和组成上都保持均匀。这样的仪器在国内也称为电磁加热器。
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:2503
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428.
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Cork Ring
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i18n: file: data/tools.xml:42
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软木环
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:2505
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429.
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Large containers like round-bottomed flasks are placed on rings made of cork, a special soft lightweight wood with good insulating qualities to protect fragile instruments.
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i18n: file: data/tools.xml:43
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大型的玻璃仪器如圆底烧杯可以放在软木环上固定。环是用特殊的轻软的木头做的，可以保护易碎的器皿。
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:2507
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430.
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Dropping Funnel
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i18n: file: data/tools.xml:47
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滴液漏斗
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Translated by
yuanjiayj
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Reviewed by
yjjart
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Located in
rc.cpp:2509
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