查询词典 zinc

Under laboratory conditions 25 min after ultraviolet ray irradiation, 5% zinc oxide's protection efficiency index are 29.4%,0.1% antiscorbutic acid protection efficiency indices is only 7.4%. 4We select appropriate types and concentrations of pesticides from 4.5% alphacypermethrin EC, 20% Imidaclopr...

4.5%高效氯氰菊酯乳油， 20％虫可溶性液剂， 2％啶虫可溶性液剂作为供试农药，筛选合适的农药种类和浓度与绿僵菌混配，作为绿僵菌的增效剂。

The appositeness of gas furnace gas application in the production of zinc powder by distillation method as heating energy is described.

阐述采用煤气发生炉生产煤气作为精馏法生产锌粉生产工艺中加热源的合理性，分析两段式煤气发生炉在用于生产热煤气时的优缺点，介绍其在精馏法生产锌粉生产工艺中的应用及其所做的改进。

Argentite ; native silver ; polybasite ; freibergite ; lead-zinc deposit ; Guizhou

辉银矿；自然银；流锑铜银矿；银黝铜矿；铅锌矿床；贵州

Some elements were more common than others, but everything from argon to zinc was there.

一些元素要比其他元素更普遍，但是所有的元素都在氩和锌之间。

At present, the most commonly used are zinc oxide arrester.

目前，使用最多的是氧化锌避雷器。

A method for the determination of lead, arsenic, chromium ,copper and zinc in soil is described.

建立了土壤中铅、砷、铬、铜和锌含量的连续快速测定方法。

This article provides the synthesis methods of high purity Arsine by arse nic,zinc and sulfuric-acid.

介绍了用砷、锌和硫酸合成高纯砷烷的方法，产品纯度为99.995%，总收率为85%。

Clean reports Luo Yi of Yao Zhide of reporter of report from our correspondent, reporter: The reporter learns from yellow Bu custom, should close custom of subordinate new pool to use a few days ago " system of the auction on net of the goods that keep tax ", undertake to leftover material of ingot of alloy of 3000 kilogram zinc net arsis sells, clinch a deal smoothly finally with 52000 yuan.

本报讯 记者姚志德、通讯员罗翌洁报道：记者从黄埔海关获悉，日前该关下属新塘海关利用"保税货物网上拍卖系统"，对3000千克锌合金锭边角料进行网上拍卖，并最终以52000元顺利成交。

In the majority of roofs, timber is the principal material used, together with numerous others, such as tiles, slates, asbestos cement, tar felt, asphalt, lead, copper , zinc, aluminium, etc.

而大多数屋面的主要建筑材料为木材，与之相配的其它材料有粘土瓦、岩板、石棉瓦、油毡、铅、铜、锌、铝等。

In the majority of roofs, timber is the principal material used, together with numerous others, such as tile s, slates, asbestos cement, tar felt, asphalt, lead, copper, zinc, aluminium, etc.

而大多数屋面的主要建筑材料为木材，与之相配的其它材料有粘土瓦、岩板、石棉瓦、油毡、铅、铜、锌、铝等。

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。