1) Alkaline medium
碱性介质
1.
Electrochemical behaviors of thiourea in alkaline medium;
硫脲在碱性介质中的电化学行为
2.
Their stability of etherbond in the alkaline medium was studied.
设计合成了一系列的邻硝基芳香醚,对碱性介质中芳醚键的稳定性进行了研究。
3.
A series ramification of aryl ethers that containing strong electrowithdrawing group (-NO2) have been synthesized, which were used as the studied substrate and the stability of aryl etherbond in the alkaline medium has been researched.
本文选用硝基作为强吸电子基团,设计合成了一系列的芳醚衍生物作为研究对象,考察了它们的芳醚键在碱性介质中的稳定性情况。
2) alkali medium
碱性介质
1.
Electrochemical polymerization of p-phenylenediamine on Pt microelectrode in alkali medium;
碱性介质中对苯二胺在铂微电极上的电化学聚合研究
2.
A study on alkali medium in the technology of pretreatment of refractory gold ores by alkaline hot-press oxidation;
某难选冶金矿石压热氧化预处理工艺的碱性介质研究
3.
Determining trace Se in pyrite by using hydride atomic fluorescence spectroscopy in the alkali medium;
碱性介质氢化物发生原子荧光光谱法测定黄铁矿中痕量硒
3) Alkaline media
碱性介质
1.
The adsorption and oxidation of methanol on Pt electrode in alkaline media have been investi-gated by using cyclic voltammetry, electrochemical quartz crystal microbalance (EQCM) and in-situ reflec-tance FTIR spectroscopy.
运用电化学循环伏安、原位FTIR反射光谱和石英晶体微天平(EQCM)等方法研究了碱性介质中甲醇在Pt电极表面吸附和氧化行为。
4) alkaline solution
碱性介质
1.
Sulfide has the active effect on the oxidization of potassium iodide by hydrogen per-oxide in alkaline solution, This kinetic system may be coupled to chemiluminescence reaction of Lu-minol and applied to determine trace of S ̄(2-).
本文发现,在碱性介质中,硫(Ⅱ)能增大过氧化氢和碘化物之间的反应速度。
2.
The corrosion properties of rolled ZK60 alloy treated at different aging states in Cl-alkaline solution were studied by SEM,EDS,XRD,weight-loss tests and electrochemistry tests.
通过扫描电镜、能谱分析、X射线衍射分析以及静态失重法、电化学测试等手段,研究了不同时效状态下商用变形ZK60合金在含Cl-的碱性介质中的腐蚀性能。
5) basic medium
碱性介质
1.
A method for determination of Pb in cyanide solution by AAS with citric acid as a masking reagent in basic medium was reported.
通过对比实验 ,选用柠檬酸钠做络合剂 ,实现了在碱性介质中用原子吸收光谱测定铅的方法。
2.
The reaction of Fe\+\{3+\} and S\+\{2-\} is a typical competition reaction,resultant of the reaction has close relation to condition of the reaction Through theoretical study and experimental verification,make sure that in acidic medium the products of the reaction are Fe\+\{2+\} and elementary substance S;in basic medium the production is black Fe\-2S\-
通过理论研究和实验验证 ,确认在酸性介质中反应的生成物为Fe3+ 和单质S↓ ;在碱性介质中反应的生成物为黑色Fe2 S3↓。
6) Weakly alkaline medium
弱碱性介质
补充资料:按防止介质倒流选用阀门
这种类型的阀门的作用是只允许介质向一个方向流动,而且阻止方向流动。通常这种阀门是自动工作的,在一个方向流动的流体压力作用下,阀瓣打开;流体反方向流动时,由流体压力和阀瓣的自重合阀瓣作用于阀座,从而切断流动。其中止回阀就属于这种类型的阀门,它包括旋启式止回阀和升降式止回阀。旋启式止回阀有一介铰链机构,还有一个像门一样的阀瓣自由地靠在倾斜的阀座表面上。为了确保阀瓣每次都能到达阀座面的合适位置,阀瓣设计在铰链机构,以便阀瓣具有足够有旋启空间,并使阀瓣真正的、全面的与阀座接触。阀瓣可以全部用金属制成,也可以在金属上镶嵌皮革、橡胶、或者采用合成覆盖面,这取决于使用性能的要求。旋启式止回阀在完全打开的状况下,流体压力几乎不受阻碍,因此通过阀门的压力降相对较小。升降式止回阀的阀瓣座落位于阀体上阀座密封面上。此阀门除了阀瓣可以自由地升降之外,其余部分如同截止阀一样,流体压力使阀瓣从阀座密封面上抬起,介质回流导致阀瓣回落到阀座上,并切断流动。根据使用条件,阀瓣可以是全金属结构,也可以是在阀瓣架上镶嵌橡胶垫或橡胶环的形式。像截止阀一样,流体通过升降式止回阀的通道也是狭窄的,因此通过升降式止回阀的压力降比旋启式止回阀大些,而且旋启式止回阀的流量受到的限制很少。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条