这些火山灰中含有锆石等矿物，这些矿物中的某些组分允许进行精确的放射性测年(以确定精确的年代数据)。
The ash contains minerals such as zircon that can be dated precisely from the radioactive decay of some of their components.
通过比较煤焦脱灰前后热重燃烧曲线的特征参数的变化和转化速率的快慢，分析了内在矿物质对煤焦燃烧特性的影响。
The effect of included minerals on char combustion characteristics were analyzed by comparing burning curves and their characteristics indexes of the four chars and their demineralized chars.
比较了粉煤除灰前后燃烧指标，考察了粉煤中的矿物质及孔隙结构对燃烧反应能力的影响。
The specifies in the combustion of pulverized coal were compared with those of demineralized coal. The effects of mineral and pore structure on combustion reactivity are investigated.
各种气体和矿物质都以火山灰的形式被封存在冰体里，它们能告诉我们许多过去的关于世界气候的信息。
Gases and minerals, in the form of volcanic dust trapped in the ice, can tell us a lot about what the world's climate was like in past ages.
结果表明，含氟酸是良好的煤和石墨的脱灰剂，能有效地脱除煤和石墨中的各种矿物质组分。
The results showed that fluorine-bearing acids are good deashiag agent of coal and graphite and can effectively leach out almost all mineral components in coal and graphite.
通过实验，研究了硅灰、超细矿渣、硅质页岩几种矿物质掺合料对高强混凝土强度的影响；
By the experiments, the effects of several mineral admixtures, such as silica fume, superfine slag and siliceous shale on the High Strength Concrete (HSC) is researched.
二者的平衡反映灰成分的催化能力，常用矿物质催化指数MCI来表示。
The balance of the both represents the ash catalytic ability. It is often shown as mineral catalytic index MCI.
为降低成本而又不大幅度损害活性粉末混凝土的强度，超细粉煤灰等矿物掺合料替代硅灰的量不宜超过加20%。
In order to reduce the cost and increase the RPC strength, the substitution of mixed minerals such as ultra-pulverized fly ash for silica fume quantity can be lower than 20%.
研究表明，变性水玻璃对细粒氧化锑矿物与主要脉石矿物硅化灰岩的浮选分离具有明显的效果，有利于它们的浮选分离。
The results show that the modified water glass plays evidently an advantageous role in the flotation separation of fine antimony oxide from the silicified limestone and the principal gangue mineral.
论述了天然火山灰用作混凝土掺合料的矿物组成、物化性能；火山灰活性及其评定。
This paper expounds mineral composition, physical and chemical characteristics, activity and its evaluation of natural volcanic ash which is used as concrete admixture.
加枫的颜色白中略带黄、红、中间有灰棕色的矿物线，制成山纹后，纹理清晰、色泽淡雅。
Add in the white color maple slightly yellow, red, grey brown is among the minerals line, made mountain grain, texture clear, colour and lustre and elegant.
灰硒汞矿是一种少见的矿物。
Samples containing tiemannite were collected from silicalite ore.
摘要：人们都知道，醋是一种神奇的清洁剂，能有效去除玻璃窗上包括灰层在内的矿物质污渍。那么，衣服或地毯上的红酒污渍该怎么处理呢？
ABSTRACT: There is an old wives' tale that says the best way to tackle red wine stains on carpets and clothes is to cover them in white wine.
煤系矿物的表面磁性强化是利用通常磁选设备实现高硫煤脱硫脱灰的新型关键技术。
For effective desulfurization and deashing of high-sulfur coal with its use of usual magnetic separation device, a surface magnetism enhancement of coal-derived minerals is a new key technology.
本文认为孝义铝土矿物质来源主要是下伏奥陶系灰岩。
The authors suggest that the main material source of bauxite is originated from its underlying Ordovician limestone.
目前研究和应用较多的矿物掺合料是矿渣、粉煤灰和硅灰，而对偏高岭土的应用研究较少。
Current research and application for mineral admixtures are more about fly ash, slag and silica fume, and less about metakaolin.
蒸汽养护条件并没有对各种水化产物，但其量，并改善矿物掺合料的火山灰活性。
The steam curing condition has no effect on the variety of the hydration products but on their amount and improves pozzolanic activity of mineral admixtures.
然而，有必要考虑由于矿物掺合料的火山灰反应消耗的CH在用CH内容时，以确定的CCM的水化程度。
However, it is necessary to consider the CH consumption due to pozzolanic reaction of mineral admixtures when using CH content to determine the hydration degree of CCM.
利用磨细粉煤灰、磨细矿渣和硅灰作为矿物掺合料，研究了各种矿物掺合料对粉煤灰陶粒混凝土抗压强度的影响。
This paper studys the influence of the mineral admixtures such as ultra-fine fly ash, ultra-fine slag and silica fume on compressive strength of lytag concrete.
藏南定日地区在白垩纪中期发育一套浅灰色深灰色的以钙质页岩、泥灰岩及微晶灰岩为主的浅海陆棚相沉积，岩石中除含较高的粘土矿物及陆源石英矿物颗粒以外，还含有十分丰富的有孔虫化石。
The Middle Cretaceous shallow sea sediments, represented by a series of light dark gray marine clastic and carbonate rocks, were well exposed along the Gongzha Section in Tingri, southern Tibet.
特性：螯合水中矿物质，以防止其与清洁剂中的有效成份发生反应布影响去污能力，避免布件发灰、发黄。
Characters: Sequesters minerals which can interfere with soil removal or react with alkaline builders. Prevents yellowing or graying caused by soil redeposit.
矿物质是引起灰沉积的根本原因，本文主要通过对矿物元素在炉内的迁移和沉积行为的研究，来揭示沾污结渣机理。
New indices for slagging and fouling are proposed by taking into account the effects of both the chemical composition of thecoal ash and the combustion conditions on the ash deposit.
利用矿物掺合料的火山灰活性等特性，研究了粉煤灰、矿渣粉、硅粉、沸石粉抑制混凝土泛碱的程度；
Utilizing the pozzolanic activity of mineral admixtures, the effect of inhibiting efflorescence of fly ash, slag, silicon fume and zeolite powder was studied;
利用矿物掺合料的火山灰活性等特性，研究了粉煤灰、矿渣粉、硅粉、沸石粉抑制混凝土泛碱的程度；
Utilizing the pozzolanic activity of mineral admixtures, the effect of inhibiting efflorescence of fly ash, slag, silicon fume and zeolite powder was studied;
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