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aluminum

TPO词频:8次
alumin
um元素
铝元素→铝

[ə'ljuminəm]


【释义】

基本释义 n.铝

常考释义 n.铝

n. 铝

【语块】

aluminum alloy

【TPO例句】

1. Aluminum is the dominant cation (positively charged ion) present in tropical soils; but plants do not require this element, and it is moderately toxic to a wide range of plants. (TPO53-P2)

铝是热带土壤中主要的阳离子(带正电的离子), 但植物不需要这种元素,并且对很多植物都有中等毒性。

2. Aluminum also reduces the availability of phosphorus, an element in high demand by plants.(TPO53-P2)

铝也降低了磷的可用性,但磷是植物极其需要的元素。

3. Because the concentration of dark-colored organic materials is low in tropical soils, they are often colored red or yellow by the presence of iron, aluminum: and manganese oxides; when dry, these soils become rock hard. (TPO53-P2)

由于热带土壤中深色有机物质的浓度较低,因此在铁、铝和锰氧化物的存在下,它们通常呈现红色或黄色; 干燥时,这些土壤变硬。

4. For example, savanna soils, like many rain forest soils, are typically oxisols (dominated by certain oxide minerals) and ultisols (soils containing no calcium carbonate), with a high acidity and notably low concentrations of such minerals as phosphorus, calcium, magnesium, and potassium, while aluminum levels are high. (TPO31-P3)

比如说,和许多热带雨林土壤一样,热带草原的土壤通常为含酸量高的氧化土(某些氧化物矿物占主导)和老成土(不含碳酸钙的土壤),在这些土壤中,磷、钙、镁、钾这样的矿物质含量非常低,而铝的含量却很高。

5. They are composed of minerals uncommon on Earth,all rich in calcium, aluminum, and titanium, the most refractory (resistant to melting) of the major elements in the nebula.(TPO22-P3)

它们是由地球上罕见的矿物质组成的,富含钙、铝以及在星云中最耐高温的(耐熔化的)主要元素钛。

6. For example, a gap just below aluminum suggested a new element would be found with properties analogous to those of aluminum. (TPO16-P2)

例如,就在铝下面有一个空位,这表明还有一个性质和铝类似的新元素存在。

7. Research has focused on the toxic effects of heavy metals such as lead, cadmium, mercury, and aluminum; however, even copper and zinc, which are essential elements, can become toxic in high concentrations. (TPO5-P1)

着重研究重金属的毒性作用,如铅、镉、汞、铝;然而即使是铜和锌这样的必需元素,如果浓度过高也会产生毒性。

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