分馏的

The results show that the behavior of hydrogen isotope fractionation in the albitic melt- water system cannot be analogously applied to that in the rhyolitic melt- water system except at particular...

本文拟合的硅酸盐熔体-水体系氢同位素分馏等值线在 P- T空间的形态变化特征与矿物-水体系存在较大差异。

The rectification device provided to Dexinhang Essence/Spice Company by us is not only used for the production of 97% natural citral, but also for separating out more than 98% natural cinnamic aldehyde and the production of other natural and compound essence with a good versatility.

此套装置在国内已在多家香料企业投产，收到良好的效果。公司设计的分馏设备注重其通用性，一套装置可生产多个品种，性价比好。

After the DHX process was used on the light hydrocarbon unit to recover C3(superscript +) compound, it had a good result that the recovery rate of C2 compound was higher in the same operation conditions. And the liquid ethane could be used as the cryogen and absorbent to increase the recovery rate of C3(superscript +) compound and decrease the energy cost greatly at the same time.

以回收C3为目的轻烃装置采用DHX工艺（DHX塔闪蒸+脱乙烷塔分馏）后，在相同工况下能使C2获得更高冷凝率，并通过液态乙烷的制冷剂和吸收剂作用使C3收率大幅提高，达到节能降耗的同时也提高了C3收率。

This paper analyzed the carbon isotopic ratios of tw o cryptoMeria, collecting froM West TianMu Mountain, Zhejiang, and studied th e t ree-ring carbon isotopic ratios evidence, for the atMospheric CO2 concentrati on change after Industrial Revolution.

植物在同化大气CO2过程中产生碳同位素分馏，因此，树轮中稳定碳同位素比值（1 3C/12C）不仅是重建古气候的工具，也是过去大气CO2浓度变化的敏感指示器。

Krypton occurs in trace amounts in the atmosphere and in rocks and is obtained by fractional distillation of liquefied air.

在大气和岩石中只有极微量的氪，可以通过液态空气的分馏来得到它。

Krypton occurs in trace amounts in the atmosphere and in rock s and is obtained by fractional distillation of liquefied air.

在大气和岩石中只有极微量的氪，可以通过液态空气的分馏来得到它。

Vary 可变 Different components of air have different boiling points, they can be separated by fractional distillation of liquid air.

空气中不同的成分有不同的沸点，可把液态空气分馏来把它们分离。

From the analysis,we can understand the principle and process of the salt forming in fractional column by the assessment of fluid mechanics of tray. the simulation of flow path;plate tower;salt forming

从分析结果可以看出，通过核算塔盘流体力学可以定性地看出分馏塔结盐的原理和过程。

Sperm parameters, serum testosterone levels, fertility, histology and ultrastructure of the testis, haematology and serum clinical chemistry were evaluated to establish the safety and efficacy of the test substance.

测量精子参数、血清睾酮水平、生育率、睾丸组织学及超微结构、血液学及血清临床化学，以评价番木瓜种子甲醇分馏物的安全性和有效性。

Petrochemicals are broken down by cracking, during the refinement process, and are thus sensitive to heat process.

这是因为石油化学物质在提炼的过程中通过分馏而分解了，因此它对加热过程很敏感。

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。