方镁石的水化是轻烧氧化镁膨胀的理论基础。
The hydration of periclase in the magnesia is the theoretical basis for its expansion.
而且，此前在太空尘埃中还未侦测到刚玉和方镁石。
Moreover, corundum and periclase have not been detected in space dust before.
转炉冶炼过程中所形成的游离氧化钙和方镁石是影响钢渣长期不稳定性的主要因素。
The free calcium oxide and the periclase formed in the converter smelting process are primary factor affect the steel slag long-term unstable.
方镁石发育完善、晶体大、直接结合率高、结构致密、抗渣性强、高温体积稳定优越。
Periclase develops completely and its crystal body is big, with high combination rate, firm and tight structure, good refuses resistance and stable performance.
本文介绍了用粘土砖、高铝砖、硅砖和方镁石砖作蓄热室上层格子体进行对比试验的情况。
A comparative test of standard clay bricks, high alumina bricks, silica bricks and periclase bricks which were used as checkers in upper parts of regenerators has been conducted.
以电熔二钙砂、方镁石一氧化锆共晶材料为原料，制备出了再结合镁锆砖，并对制品的烧结性能进行了研究。
It produces rebonded magnizium-zirconium bricks which is made up of fused magnesite and fused eutectic MgO-Z_rO_2 materials. Then it analyzed the properties of samples after sintering.
通过全面检测和分析，指出混凝土骨料中含有的方镁石发生水化反应所引起的体积膨胀，是混凝土构件胀裂的根本原因。
Through some macro and micro inspections, the cause is found out of the volume expansion due to the hydration of magnesia in concrete aggregates.
试验表明，加锆改性尖晶石砖的使用情况较直接结合镁铬砖差，而加铬方镁石复合尖晶石砖(LYC砖)的使用效果好于直接结合镁铬砖。
And the test shows that the using condition of modified zirconium spinel brick is more bad than direct-bonded magnesia brick but as for chrome periclase-spinel compound brick (LYC) it is better.
海山顶部的岩石是由蛇纹石化超镁铁质方辉橄榄岩组成。
The rocks at the top of the seamount consist of serpentinized ultramafic harzburgite.
最近有学者指出地氟病的发病机制主要有以下三方面学说：1低营养低钙学说，2自由基学说，3镁学说。
Three theories were put forward by some researcher. 1 low nutrition and low calcium 2 free radical 3 magnesium theory.
由于镁晶体为密排六方结构，镁合金的室温塑性加工能力较低，因而很有必要研究镁合金的热拉伸性能，壳形件热拉深成形及其有限元模拟，为今后镁合金塑性加工提供必要技术支持。
So it is necessary to study hot stretch properties, hot drawing of shell parts and its finite element simulation of magnesium alloys for providing technical supports of plastic processing.
射线衍射表明，其主物相仍然是六方晶系的微晶镁，晶胞常数与微晶镁相同。
XRD indicated that the main phase of the resulting microcrystalline Mg remained the hexagonal crystal structure and the lattice constants keep the same values with the pure microcrystalline Mg.
该方法一方面可降低镁铝水滑石生产的成本，另一方面为卤水的综合利用又开辟了一条新途径。
It can low the cost in this way. On the other hand, it creates a new way for brine's integral utilization.
介绍安钢二炼钢厂在1号方坯连铸机中间罐上应用镁钙质干式涂料及快速更换水口技术的情况，快换水口系统原理及取得的效果。
This paper introduces the application of dry magnesia-calcia coating and quick nozzle change technology in tundish of No. 1 billet caster at No. 2 Steel making Plant of Angang.
介绍安钢二炼钢厂在1号方坯连铸机中间罐上应用镁钙质干式涂料及快速更换水口技术的情况，快换水口系统原理及取得的效果。
This paper introduces the application of dry magnesia-calcia coating and quick nozzle change technology in tundish of No. 1 billet caster at No. 2 Steel making Plant of Angang.
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