查询词典 select flotation

They sing by striking their flippers against their chests to hit their pharyngeal pouches, balloon-like extensions of the trachea that are unique to Odobenus and that also serve as flotation devices.

它们用鳍拍胸膛，打击咽囊，也就是气管的延伸，状似汽球，是海象独有的特徵，同时也有漂浮的作用。

In acid pulp, the depressing abilities of reagents on diaspore are in the order of hydroxamic acid starch＞dialdehyde starch＞carboxymethyl starch＞cationic starch＞primary starch. In addition, hydroxamic acid starch and carboxymethyl starch can activate kaolinite without influence on the recoveries of pyrophyllite and illite, so the two reagents have great potential and prospect to be the depressant of diaspore and the activator of kaolinite in bauxite reverse flotation.(3) By oximation of the copolymer of acrylamide and methyl acrylate, hydroxamic acid polyacrylamide is synthesized.

3对丙烯酰胺和丙烯酸甲酯的共聚物肟化制得氧肟酸聚丙烯酰胺，将它同非离子聚丙烯酰胺、阴离子聚丙烯酰胺、阳离子聚丙烯酰胺和两性聚丙烯酰胺分别应用于四种矿物的单矿物浮选试验，结果显示，改性聚丙烯酰胺对一水硬铝石、高岭石和伊利石均具有活化作用，其中，药剂对高岭石的活化最强，使它的回收率在整个pH值范围达到80％左右，在一定pH条件下超过一水硬铝石的回收率，解决了高岭石难浮选的问题。

Methods Freshmen and junior of medicos were selected,and parasitological examination were conducted for the infections of intestinal parasite,in-cluding physiological saline direct smear method,saturated brine flotation,modified Kato's thick smear and natural sedimentation.

目的 了解某高校医学生肠道寄生虫感染状况，在校学生寄生虫防治工作提供依据方法采用生理盐水直接涂片法、饱和盐水漂浮法、厚涂片透明法、自然沉淀法对某高校、三年级大学生659人进行调查。

Methods Freshmen and junior of medicos were selected,and parasitological examination were conducted for the infections of intestinal parasite,in-cluding physiological saline direct smear method,saturated brine flotation,modified Kato's thick smear and natural sedimentation.

采用生理盐水直接涂片法、饱和盐水漂浮法、厚涂片透明法、自然沉淀法对某高校一、三年级大学生659人进行调查。

The relation between the character of the flotation feed and the petrographic constituents of raw coal and especially the flowsheet is briefly described.

扼要地概括浮选原料的性质与原煤的岩相组成的关系，特别是和工艺流程的关系。

In the present paper,the use of 8-hydroxyquinolinecomplexs in precipitate flotation to separate and preconcentrate Cu and Mn,using SDBS as collector,followed by AAS spectrophotometric determination is proposed.

提出了以8-羟基喹啉为沉淀剂，十二烷基苯磺酸钠为浮选剂，沉淀浮选预分离富集与火焰原子吸收光谱法联用测定痕量Cu和Mn的新方法。

The floatation rate of Pd (superscript 2+) reaches 100% when the concentrations of NaNO3, KBr and cetyl pyridinium bromide in solution are 0.05 g/mL, 3.0×10^(-2) mol/L, 5.0×10^(-4) mol/L(pH 4.0), respectively. Pd (superscript 2+) could be separated from Ru (superscript 3+), Al (superscript 3+), Cr (superscript 3+), Ni (superscript 2+), Ga (superscript 3+), Fe (superscript 3+) and Zn (superscript 2+) by floatation quantiatively. A method of flotation separation and enrichment of Pd (superscript 2+) was established.

当溶液中硝酸钠、溴化钾、溴化十六烷基吡啶的浓度分别为0.05 g/mL，3.0×10^(-2)mol/L，5.0×10^(-4)mol/L，在pH 4.0时，Pd(上标 2+)的浮选率达到100%，Pd(上标 2+)可与Ru(上标 3+)，Al(上标 3+)，Cr(上标 3+)，Ni(上标 2+)，Ga(上标 3+)，Fe(上标 3+)，Zn(上标 2+)定量分离，据此建立了浮选分离和富集Pd(上标 2+)的新方法。

The flotation behaviour of platinum from stannous chloride-malachite green-water system in the presence of ammonium sulphate was studied.

研究了在盐酸介质中硫酸铵存在下氯化亚锡-孔雀绿-水体系浮选分离铂的方法。

Pretreatment ; Sulphatization ; Arsenic removal ; Reverse flotation

预处理；硫酸化；除砷；反浮选

Gelena is pretreated by sulphatization, forming a layer of PbSO_4 film on its surface. The film has no effect on arsenic minerals and gelena is depressed during reverse flotation.

通过硫酸化预处理，可使方铅矿表面形成一层PbSO_4覆盖膜，而砷矿物不受影响，从而在反浮选中，方铅矿受到抑制。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。