This date is some 1,500 years before the invention of smelting.
日期是在发明融化金属技术之前1500年。
smelting
/'smeltiŋ/
英汉-汉英词典
- n. 熔炼
- v. 精炼（smelt现在分词）
词组 | 习惯用语
smelting furnace 冶炼炉；熔化炉
英语例句库
- The brickmaking,smelting,china,filature, weaving and such handiworks had appeared early in the Ming Period.
早在明代就有制砖、冶坊、陶瓷、缫丝、织布等手工业。 - The practice shows that smelting high grade ferrotitanium with rutile by thermite method is feasible.
实践证明，采用金红石铝热法生产高钛铁在技术上是完全可行的。 - Smelting,cast-on outwell and heat treatment handicraft,may accomplish with the type product or material in reference in creating process.
熔炼、铸造和热处理工艺,可作为同类型产品或材料在制造过程中的参考。 - In this paper,the practice of producing nanometer zincite and concentrating indium from the dust of smelting lead was introduced in detail.
文章详细介绍了利用铅冶炼烟尘生产纳米氧化锌并富集铟的生产实践。 - The author introducd the electric equipment design of ore smelting eutecticum engineering of ore sintering plate, stated the problemes and the countermeasures.
介绍了矿冶共晶工程烧结车间的电气设计,并阐述了设计遇到一些问题以及解决的方法。 - Using carburizing agent and devulcanized agent,experiment of carburisation and desulphuration for semisteel which in smelting high titanium slag by electric cooker has been studied.
用增碳剂和脱硫剂对冶炼高钛渣副产半钢进行了增碳脱硫试验研究。 - In order to recover the tungstenic dust, sodium carbonate was added to it and smelting test was carried out in a 0. 1MVA electric arc furnace.
要为回收钨尘，利用钨尘灰与碳酸钠在0．1MVA电炉内进行了回收试验，制成粗钨酸钠。 - The obtained achievement in building material industry is studied, including sintering cement with substituting coal by cokeite and smelting rockwool with substituting coke by cokeite and so on.
本文介绍了采煤副产品～天然焦的特性，并对其在建材行业的开发研究成果进行了评述．主要包括天然焦代煤烧制水泥，天然焦代焦炭熔制岩棉等。
声明：以上例句、词性分类均由互联网资源自动生成，未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
原声例句
科学60秒 听力 2013年9月合集
《卫报》（文章版）
You can imagine, the Industrial Revolution, lead smelting, and all that kind of thing.
你可以想象，工业革命，铅冶炼，以及所有类似的事情。
双语版 TED-Ed 演讲精选
Smelting uses a lot of energy and, depending on the type of battery, can release harmful by-products.
冶炼过程消耗大量能源，并且根据电池的类型，可能会释放有害的副产物。
PBS趣味科普
But using commodity money means you have to make commodity money, which is solved by production technologies–like smelting.
但是使用商品货币意味着你必须制造商品货币，它是通过冶炼等生产技术来解决的。
双语版 TED-Ed 演讲精选
The heart of most battery recycling is a process called smelting, which is basically just melting the metallic parts.
大多数电池回收的核心是一个叫做熔炼的过程，也就是将金属部分熔化。
经济学人 Finance and economics
Since the fateful smelting, economic output and greenhouse-gas emissions have risen in tandem.
自致命的冶炼以来，经济产出和温室气体排放量同步上升。
魔鬼经济学
I mean, the earliest record of iron smelting is within sub-Saharan Africa.
我的意思是，最早的铁冶炼记录是在撒哈拉以南非洲地区。
TED演讲（视频版） 2020年10月合集
So we're not going all the way back to the mine through smelting, transportation, processing.
所以我们不会通过冶炼、运输、加工一路回到矿山。
VOA Standard 2013年10月合集
For adults, heavy exposure can come from working in battery recycling, smelting or painting. It can affect adults’kidneys and blood pressure.
对于成年人来说， 大量接触可能来自电池回收、冶炼或油漆工作。 它会影响成年人的肾脏和血压。
英国学生科学读本
These substances are got rid of by first roasting the ore in a furnace, and then smelting or melting it in a much hotter furnace.
首先将矿石在熔炉中进行加热，然后再将其放入到温度更高的熔炉之中进行融化。
英语百科
Smelting
![Cowles Syndicate of Ohio in Stoke-upon-Trent England, late 1880s. British Aluminium used the process of Paul Héroult about this time.[9]](/uploads/202502/11/Cowles_furnace-24701.jpg)
Smelting is a form of extractive metallurgy; its main use is to produce a base metal from its ore. This includes production of silver, iron, copper and other base metals from their ores. Smelting makes use of heat and a chemical reducing agent to decompose the ore, driving off other elements as gases or slag and leaving just the metal base behind. The reducing agent is commonly a source of carbon such as coke, or in earlier times charcoal. The carbon (or carbon monoxide derived from it) removes oxygen from the ore, leaving behind the elemental metal. The carbon is thus oxidized in two stages, producing first carbon monoxide and then carbon dioxide. As most ores are impure, it is often necessary to use flux, such as limestone, to remove the accompanying rock gangue as slag.
- wet type tower abrasion mill的意思
- wet type water meter的意思
- wet type well method的意思
- Wetu的意思
- wetuc的意思
- wetucs的意思
- wet umbilicus的意思
- Wetumka的意思
- wetumpka的意思
- wet unit weight的意思
- wet unloading的意思
- wet unstable的意思
- wet up的意思
- weturly的意思
- wet us的意思
- Wetus的意思
- WET V1的意思
- wet vacuum distillation的意思
- wet vacuum pump的意思
- wet vapor的意思
- wet vapour的意思
- wet variolation的意思
- wet vent的意思
- wet ventilator的意思
- wet volume capacity的意思