查询词典 pyrogenic

It is nothing else than impurities prenatally inherent in ore that seriously affect the quality of the latter, which is formed as a result of geological vicissitudes including diastrophic movement, eruption of volcano, sedimentation, glaciation and weathering etc., under the action of which pyrogenic rocks, volcanic complex, aqueous rocks, sedimentary rocks etc., come into being, some of which exist in a stage of symbiosis, the main cause of the absence of pure rocks in nature, wherein lies the reason for the need of separation technology and apparatus, namely, ore-dressing devices and equipment, so far impotent to meet the requirements of metallurgical industry the scientists make every endeavor to elevate to a new high by laser separation.

影响矿石质量的关键是其所含杂质的多少，其成色高低受一系列地质变迁，如地壳运动，火山爆发，沉积运动，冰川运动及风化侵蚀等作用影响，经过高温成岩，火山熔岩，含水岩，水成岩等过程形成，部分以共生态存在。自然界纯矿石稀少，因此我们需要使用分离技术和设备，即筛矿装置和器械，但目前的设备已不能满足冶矿业的需求，科学家们正试图以激光筛选使选矿技术达到一个新的水平。

The results indicated biogenic conversion, petrogenic and pyrogenic were three important sources of PAHs and their contributions were 19%, 24% and 57%, respectively.

由于长江口距离燃烧源较远，与周边的城镇相距甚远，所以长江口表层沉积物中高环多环芳烃含量相对较低，以石油源PAHs污染为主。

At other locations, both petrogenic and pyrogenic inputs were significant.

污染程度差异大。

Source apportionment results exhibited that pyrogenic and petrogenic source were two major sources of PAHs, the contributions of which were 92.1% and 7.9%, respectively.

上海市表层土壤中多环芳烃污染源主要有燃烧源和石油源，以燃烧源污染为主，占92.1%，石油源污染仅占7.9%。

Statistics analysis and some diagnostic ratios were used for source identification and the contribution rates of main sources were also calculated. Pyrogenic PAHs and petrogenic PAHs accounted for 70.97% and 11.38% and 64.93% and 14.11% respectively. PAHs in the road dusts from Shanghai urban area were mostly generated by incomplete combustion. I...

结果表明，不完全燃烧来源和石油类产品泄漏来源的贡献率分别为70.97%、11.38%和64.93%、14.11%；上海市中心城区地表灰尘中PAHs主要来源于各类矿物燃料的不完全燃烧，而且主要来源于当地污染源。

Pyrogenic PAHs and petrogenic PAHs accounted for 70.97% and 11.38% and 64.93% and 14.11% respectively. PAHs in the road dusts from Shanghai urban area were mostly generated by incomplete combustion. In addition, local pollution sources were the main sources.

结果表明，不完全燃烧来源和石油类产品泄漏来源的贡献率分别为70.97%、11.38%和64.93%、14.11%；上海市中心城区地表灰尘中PAHs主要来源于各类矿物燃料的不完全燃烧，而且主要来源于当地污染源。

Identification of PAHs sources suggests that all up-cores were dominated by petrogenic sources, but all down-cores except for S17 and S18 were dominated by pyrogenic sources or mixed sources. In contrast, biogenic sources were found dominant in S17 and S18 as they were characterized by higher ratio of perylene/Σpenta-PAHs.

各岩心表层皆大致倾向石油来源，随著深度的增加而逐渐倾向石油燃烧来源或石油/燃烧之混合性来源，其中位处峡谷南隅之岩心S17及S18则有较明显之生物性来源贡献。

Of or relating to rock so formed; pyrogenic .

火成岩的，熔灰岩的按上述方法形成的岩石的，与之有关的；火成的

The combined capacity for siloxane and pyrogenic silica is planned to be approximately 200,000 metric tons per year.

该硅氧烷和气相二氧化硅工厂合作项目的一期工程已于2008年11月中旬完工并投入运营。

Under the action of which pyrogenic rocks, volcanic complex

在这些作用下，形成了火成岩，火山岩的复合物，水成岩，沉积岩，以及他们的共生物

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。