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空气接触
相关语句
  contacting air
     Heat and air affected Vc stabillity greatly in extracting solution. Heating or contacting air could speed up Vc losing.
     浸提液中Vc的稳定性受热及空气的影响较大,加热和与空气接触都可以加速Vc的损失。
短句来源
     High temperature parison out of the die begins to cool after contacting air during parison formation, which results in parison temperature gradients in axial and radical direction.
     型坯成型中高温的型坯在离开口模后与空气接触冷却 ,导致型坯在轴向方向和径向方向存在温度梯度。
短句来源
  “空气接触”译为未确定词的双语例句
     4. contact oxidation of wine with air.
     4.酒液与空气接触被氧化产生“醭膜”现象。
短句来源
     This method had good reappearance and stability. The EAET-RFC of 10 to 14 aged children exposed to 0. 18 mg/m~3 vinyl chloride was 62.4% (n=10).
     观察空气接触氯乙烯0.18mg/m~3的10~14岁儿童E_(AET)-RFC(62.4%,10例),明显低于0.08mg/m~3氯乙烯(VC)组(71.3%,40例)和对照70.6%(100例,P<0.001)。
短句来源
     Pass by the analysis, ABS powder stop over in the dryer in the cent contact of dry process inside and air fully, ABS powder retention retains about 120 minutes, were oxidized by oxygen in the air to become yellow, like this of powder is with the SAN compound , the yellow degree number of ABS should be attain 30. ( yellow degree number of grain should lower 25).
     经过研究,发现ABS粉料在干燥过程中与空气接触,粉料在干燥器内停留时间大约120min,容易被空气中的氧气氧化变黄,这样的粉料和SAN掺混造出的ABS颗粒黄度指数达到30以上(国内外先进的黄度指数指标应小于25)。
短句来源
     The film of MgO was formed on the surface of the MgB\-2 thick film to protect the oxidation for the sample further.
     样品表面的镁与空气接触形成MgO膜 ,在一定程度上阻止了MgB2 样品进一步被氧化 .
短句来源
     When braking,the disk directly contacting with air and having a larger heat dissipation area produces less heat fade.
     盘式制动器在制动时,制动盘直接与空气接触,又有很大的散热面积,不易发生热衰退现象,具有抗热衰退和热衰退恢复特性,特别适用于高速运动型摩托车;
短句来源
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  相似匹配句对
     A study on the hydroquinone exposure in the workplace
     车间空气氢醌接触情况调查研究
短句来源
     Collection of Personal Exposure to Ammonia in Ambient Air by Diffusion Sampling Monitor
     扩散法采集个体接触空气中氨
短句来源
     NEWAIR
     新空气
短句来源
     Intimate Contact
     亲密接触
短句来源
     Touching Strangers
     接触陌生人
短句来源
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In this paper the writer points out that the shape of the extinction-time Curves of a colored sol'n developed with Nessler's reagent changes with experimental conditions.

本文指出纳氏试剂显色液的时间—消光曲线,因实验条件的不同而改变形状.据认,引起消光值下降的主要原因,乃显色液从空气中吸收CO_2.从动力学角度出发讨论了影响CO_2吸收的因素.在温度变化不大时,这些因素是:显色液与空气接触表面(A)、显色液体积(V)以及显色液表面至容器口的距离(X)等.显然,在小试管中进行速效性铵态氮的速测将获得较佳结果.

By determining the polarization cureve, the discharge potentials of Sb (Ⅲ), Sn (Ⅳ), As (Ⅲ) and H~+ ions were obtain edas -0.92, -1.04, -0.81 and -1.12V respectively, which were checked with the thermodynamic calculation. Their dynamic parameters were estimated by the Tafel lines which resulted after modification of their concentration polarization. At 50℃, the rate constant was found to be 1.54×10~(-4) cm/s, the exchange current density 10~(-2) A/cm~2 and the activation energy 9100 cal/mole.

本文是湿法炼Sb的物理化学研究中的一部分。当用Na_2S-NaOH溶液浸出复杂的Pb-Sb精矿时,Sb以SbS_3~(3-)离子形态进入溶液。精矿中的Sn和As部分溶解,而Pb则留在残渣中与Sb分离,SbS_3~(3-)离子与空气接触时,部分氧化成SbS_4~(3-)离子。用稳态法测定了极化曲线,确定了在硫化碱溶液中Sb(Ⅲ).Sn(Ⅳ),As(Ⅲ),Sb(Ⅴ)和H~+离子的放电电位。其相应数值如下:-0.92,-1.04,-0.81,-0.68和-1.12V。这些数值分别用纯化学试剂配制的溶液和工业电解液进行了比较测定,并用热力学计算结果进行核对。Sb(Ⅴ)的放电电位还通过计时电位法核对。将所得极化曲线进行浓差极化修正后获得了Tafel直线,由此计算出有关的电极动力学参数。应用计时电位法,探讨了SbS_3~(3-)和SbS_4~(3-)离子的阴极放电机理。结果表明:SbS_3~(3-)离子放电前经历一个前置转化步骤,即: SbS_3~(3)→SbS~++2S~(2-) (1)生成的中间产物SbS~+按下列反应SbS~++3e→Sb+S~(2-) (2)还原为金属Sb。SbS_4~(3-)离子在阴...

本文是湿法炼Sb的物理化学研究中的一部分。当用Na_2S-NaOH溶液浸出复杂的Pb-Sb精矿时,Sb以SbS_3~(3-)离子形态进入溶液。精矿中的Sn和As部分溶解,而Pb则留在残渣中与Sb分离,SbS_3~(3-)离子与空气接触时,部分氧化成SbS_4~(3-)离子。用稳态法测定了极化曲线,确定了在硫化碱溶液中Sb(Ⅲ).Sn(Ⅳ),As(Ⅲ),Sb(Ⅴ)和H~+离子的放电电位。其相应数值如下:-0.92,-1.04,-0.81,-0.68和-1.12V。这些数值分别用纯化学试剂配制的溶液和工业电解液进行了比较测定,并用热力学计算结果进行核对。Sb(Ⅴ)的放电电位还通过计时电位法核对。将所得极化曲线进行浓差极化修正后获得了Tafel直线,由此计算出有关的电极动力学参数。应用计时电位法,探讨了SbS_3~(3-)和SbS_4~(3-)离子的阴极放电机理。结果表明:SbS_3~(3-)离子放电前经历一个前置转化步骤,即: SbS_3~(3)→SbS~++2S~(2-) (1)生成的中间产物SbS~+按下列反应SbS~++3e→Sb+S~(2-) (2)还原为金属Sb。SbS_4~(3-)离子在阴极上放电过程分两步进行,首先,SbS_4~(3-)离子按下式还原为SbS_3~(3-)离子, SbS_4~(3-)+2e→SbS_3~(3-)+S~(2-) (3)生成的中间产物SbS_3~(3-)离子再按反应(1)和(2)式还原为金属Sb。

This paper covers a study of the stability of corrosion products on low alloy steels after leaving sea water. When taken from the sea, the samples are de-watered in alcohol, dried in cold air and coated for sealing with epoxy resin.Then the samples are packed with antirust paper and kept in a desiccator. Then the scales are taken off the steel samples in an argon cabinet and are immediately put into a test tube filled with argon. Part of the rust scale is then transferred into a sample box made of organic glass...

This paper covers a study of the stability of corrosion products on low alloy steels after leaving sea water. When taken from the sea, the samples are de-watered in alcohol, dried in cold air and coated for sealing with epoxy resin.Then the samples are packed with antirust paper and kept in a desiccator. Then the scales are taken off the steel samples in an argon cabinet and are immediately put into a test tube filled with argon. Part of the rust scale is then transferred into a sample box made of organic glass sealed leakproof and is ready for Mossbauer spectrum analysis. In this way the decomposition of extremely unstable Fe(OH)_2 can be avoided. Once the scale is exposed to the air, Fe(OH)_2 will decompose, while other physical phases will remain unchanged for a relatively long time. Any changes in physical phases will be shown from the results of Mossbauer spectrum analysis.

本文对低合金钢腐蚀产物离海后的稳定性进行了研究。海港挂片试样离海后采用酒精浸泡去水,冷风吹干去酒精,然后用环氧树脂涂封锈层,外面用气相防锈纸包扎并放入干燥器中。取样时,在氩气柜中取下锈层后立即放入充氩的试管中,再从试管中取出部分锈样放入有机玻璃制的穆斯堡尔谱样品盒,并将缝隙密封。这样能保留极不稳定的Fe(OH)_2。如果让锈层与空气接触,则Fe(OH)_2很快分解消失,而其它物相可经历相当长的时间而不变化。物相是否发生了变化是根据穆斯堡尔谱判断的。

 
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