placer iron是什么意思

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用法例句

By mixing ferrite and iron sand,a composite AbsorptionMaterial was formed with two absorption peaks,one of which shifts towards low frequency withits absorptivity increasing to 14.

以铁砂为原料制备一种尖晶石型铁氧体电波吸收材料，在7～12GHz范围，发现有两个吸收峰，吸收量在9～13dB；将铁氧体吸收体和铁砂吸收体组成复合电波吸收材料，亦有两个吸收峰，一峰向低频区偏移，吸收量增至14。

In this paper,the M-type hexagonal wave absorption ferrites have been prepared by standard ceramic techniques with iron sand substituted Fe_2O_3.

用铁砂代替Fe2O3,采用传统陶瓷烧结工艺,研制出几种M型六角晶系复合铁氧体吸波材料。

Research on the composite radar absorption material based on iron-sand;

铁砂基复合电波吸收材料研究

We can make superior absorption materials by using iron-sand ( magnetite ore ) tailings .

用铁砂 (磁铁矿 )尾矿为原料可制备性能优良的吸收材料。

Mix anisotropic uniaxial single-domain BaFe 12 O 19 particle into compound iron-sand foundation EM wave absorption material,with magnetic-texture treatment,we can find the absorption quantity increase from 19dB to 24.

在铁砂基电波吸收材料中掺入单轴各向异性的BaFe12 O19单畴微粒 ,经磁织构化处理 ,使吸收量从 19dB提高到2 4。

The changing tendency of the magnetic susceptibility per unit mass for chromite sand was studied after heated at different temperatures.

研究了铬铁矿砂在不同的温度加热后的单位质量磁化率变化趋势;通过强磁场磁选机分选树脂混合砂,分选率达到85。

Study on preparation and adsorption characteristics of multi-element modified iron-oxide-coated sand

改性铁覆膜砂的制备及吸附性能研究

In this paper, the Iron-oxide-coated sand absorption character prepared in different temperatures was studied, mainly tested its absorb hexad chromium, and the inherent reason that formed this differences was explained.

本文研究了不同温度下制备的铁覆膜砂吸附性能的差异,对铁覆膜砂吸附Cr(Ⅵ)的性能进行了综合的测试,说明了形成这些差异的内在原因制备温度对IOCS的吸附性能有显著影响,一般低温制备的IOCS要比高温制备的铁覆膜砂吸附性容量较大,去除效率较高;覆盖在石英砂表面的铁氧化物在不同的焙烧温度下形成了不同的物质,110℃的低温一般形成FeOOH(针铁矿),而600℃高温下形成的则为α-Fe2O3(赤铁矿)。

The sand faced-iron mould casting process is a special iron castings production process, according which castings are to he cast in the iron moulds having a thin layer of the resin sand facing in their inner surfaces.

铁型覆砂铸造是指在金属型（铁型）内腔覆上一薄层树脂砂，然后采用这种覆砂铁型浇注铸件。

Using Resin Sand-Coated Iron Mold to Produce Ductile Iron Brake Disc

用覆砂铁型铸造工艺生产球铁列车刹车盘

Casting method and Equipment Used for Resin Sand-Coated Permanent Mould Cast Wheel Hub Castings

轮毂类铸件覆砂铁型铸造工艺及设备

Cast-iron pressure pipe centrifugally cast in sand-lined molds

GB/T3421-1982砂型离心铸铁管

Intergovernmental Group of Experts on Iron Ore

政府间铁矿砂专家组

separation type iron reinforcement grit roller rice mill

分离式铁筋砂辊辗米机

He was rubbing a pan with sandpaper.

他在用砂纸打磨铁锅。

Sand Seam Strengthening with Advanced Small Pipe by Grouting Sand Consolidating Agent in Tunneling

地铁穿越砂层超前短导管固砂剂加固施工技术

Preparation of Spinel Ferrite-based Microwave Absorbing Materials with Iron-sand;

用铁砂制备尖晶石型铁氧体基微波吸收材料

analyze an ore to see if it contains iron;

分解一粒矿砂确定其是否含铁；

Iron Ore Charter Party

日本航运公会铁矿砂运输租船合同

They analyzed the ore and found iron in it.

他们分析了矿砂,从中发现了铁。

FLOOD AND SEDIMENT DISASTERS ALONG BAOJI-CHENGDU RAILWAY IN 1981

1981年宝成铁路沿线的洪水和泥砂灾害

INVESTIGATION ON THE MOLD FILLING CHARACTERISTICS OF GRAY IRON IN THE EPC PROCESS WITH UNBONDED SAND MOLDS;

灰铸铁干砂消失模铸造充型特性研究

Technology study on cast iron parts' repair with grit-blasting and Arc-spraying;

铸铁零件喷砂电弧喷涂修复工艺研究

Adsorption of Cr(Ⅵ) from Aqueous Solution Using Iron Oxide Coated Sand

涂铁石英砂吸附水中Cr(Ⅵ)的研究

Research on quality inspection of sand pile on soft soil ground improvement in high-speed railway

砂桩处理高速铁路软基质量检验研究

Surface characteristics of quartz sand coated with iron oxides

氧化铁涂层石英砂滤料表面特征研究