查询词典 Zn

ObjectiveTo determine the content of five trace metal elements in Black Nightshade Herb.

作者：夏侯国论，丁冶春，范小娜目的测定中草药龙葵中Fe，Cu，Zn，Mn，Ca的含量。

16Nm Mn-Zn ferrite nanoparticles were synthesized by a hydrothermal precipitation approach using metal sulfate solution and aqueous ammonia.

以金属离子的硫酸盐溶液和氨水溶液为原料，采用水热法制备了粒径为6~16nm的锰锌铁氧体纳米粒子。

They not only occur in deep ocean basins such as in the central North Atlantic where they were deposited below CCD, but they extend up the continental slopes and rises, such as in the Alps, including the Gampu area , in the Carpathian Mountains (Austria, Slovakia, Poland, Romania), in Spain, in Turkey and in the Exmouth Plateau (Legs 122 and 123) in northwest Australia.The Upper Cretaceous reddish marlstones in Italy are particularly similar to the Upper Cretaceous Chuangde formation red beds in the Tibetan Himalayas. In summary, the Upper Cretaceous redbeds have several characteristic as follow:(1) very low TOC, only 0～0.3%;(2) wide distribution throughout the Neo-Tethys, from north Atlantic to the west, to Exmouth Plateau to the east;(3) Sedimentary environment of the red beds varied from oceanic basin, to slope/rise, to outer shelf. Most comment is pelagic and hemipelagic.

床得组泥灰岩〓含量0.26～5.62％，远远高于奥地利和意大利红层0.45～0.82％，并出现金属元素高含量，平均达926ppm，以高含量Ba、Cu、Zn、Cr、Ni、Th等元素为特征；2）床得组红层〓相对于定日地区同期海相碳酸盐〓整体负向偏移量达2.0‰，而在其床得组红层内部〓自下而上一直攀升，自-1.5‰～0.0‰之间上升到0.0‰～1.0‰之间；定日贡扎剖面相当于江孜床得组红层的Santonian-Campanian期，〓也出现一弱负向偏移，偏移量达-0.8‰；3）红层内锶同位素〓比值为最低值，同期定日地区也出现锶同位素低值；4）床得组部分层段的泥晶灰岩出现丰富的有孔虫，其中尤以浮游有孔虫最为繁盛，与江孜地区临近的浅海陆棚相的定日—岗巴地区此时期出现自Cenomanian-Turonian界线生物绝灭后的生物辐射期。

Two kinds of Al-Zn-Mg-Cu alloys with and without Sc and Zr were produced.

制备了成分Al-5.8Zn-2.5Mg-1.6Cu-0.2Cr和Al-5.8Zn-2.5Mg-1.6Cu-0.2Cr-0.23Sc-0.12Zr的两种合金。

The method can be used for determination of Zn~(2+) of trace level .

该方法可用于痕量 Zn2+的测定。

Study of the effects of N and Zn fertilizers on the

水稻的香味及氮、锌肥对香味效应的研究。

Testing was conducted with Cd, Cu, and Zn in these experiments.

测试是与镉，铜，锌在这些实验。

The extraction mechanism is obtained and the separation of Zn and Cd is discussed.

揭示了Cyanex923萃取硝酸过程中出现第三相的机理和三相的相行为，讨论了第三相形成的影响因素。

A unique copper target design for production of radioactive 〓Zn is presented and it thermal property is tested.

靶材料的研究制备以及放射性核素的释放都是需要解决的关键技术问题。

New studies indicate that as Zn and Cu are out of balance in your body, it can really cause hair loss to take place.

新的研究表明，锌和铜的失去平衡在你的身体，它可以真正导致脱发发生。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。