查询词典 fraction

The amounts of bound residues in humin fraction did not change significantly with time from 28 to 224 DDA.

在处理最初28天，富啡酸中〓C-甲磺隆结合态残留物不断增大，随后减少；胡敏素中的结合态残留量在28～224天变化不大。

Then; we compare the calibrated fossil shell results with the datings of the soil humin fraction and concentrated pollen in order to evaluate the reliability of the dating terrestrial mollusks fossil shells.

运用现生蜗牛壳体的AMS14C测定来校正化石蜗牛的年龄，结合剖面中孢粉浓缩物、土壤有机质的AMS14C年代学对比研究，发现蜗牛化石壳体的文石可以提供较可靠的年代数据，为14C测年的可靠性研究提供了一种可能的途径。

Microbial biomass in soil profile showed negative relation with soil pH value and bulk density, while positive correlation with contents of soil organic carbon, light fraction and particulate organic carbon and fine root biomass were found. There were no significant difference between soil microbial biomass and DOC, total N, total P, hydrolyzable N and available P.

土壤微生物生物量垂直分布与土壤pH和容重呈负相关，与土壤的有机碳、轻组有机碳和颗粒有机碳含量及细根生物量呈显著的正相关，但与土壤可溶性有机C和全N、全P、水解性N和速效P含量的相关性不显著。

By comparing and analysing, we obtain the variation of the fraction of volume of the vapour inside pump and the variation of efficiency. Thus we know the anti-cavitation and efficiency of the pump how were influenced by different methods of generate blades. The results are good reference for engineers majoring on hydromechanical mechanism

通过对不同叶片水泵內部气体体积和效率进行对比分析，得出了三种不同的叶片成型规律对水泵的抗空化性能和效率的影响，得到的结论对于轴流水泵的设计、改进有一定指导意义。

The patient's vital sign was stable intraoperative and cardiologist was consulted after he was transferred to ward. The 12 lead ECG showed complete AV block and diffuse ST-segment elevation. The echocardiogram showed LV global hypokinesia with impaired contractility, ejection fraction 37% and dilated right heart.

手术中病患的生命徵象都稳定，术后回到病房即照会心脏科医师。12导程心电图显示为完全性房室阻断及广泛的ST升高；心脏超音波检查发现左心室跳动不良、收缩力不好，射出率只有37%，右心有扩大的现象。

It's convinced that high hardness low friction films with high fraction of SP〓 bond can be obtained using IBAD with ion sputtering.

研究表明离子束溅射可获得以SP〓结构为主的高硬度低摩擦系数碳膜。

Methods AH dry powder inhalation was prepared by spray-drying method. Following spray-drying, resultant powders were characterized using scanning electron microscopy and laser diffraction, and the aerosolisation performance was determined using twin-stage liquid impinger. The process conditions were optimized with orthogonal design combined with multi-index test. The powder yield, aerodynamic diameter, angle of repose and respirable fraction were used as indices for orthogonal design.

采用喷雾干燥法制备盐酸氨溴索干粉吸入剂，采用双层液体碰撞器测定盐酸氨溴索干粉吸入剂体外沉积率，扫描电镜观察粉粒的形态，激光粒度测定仪测定粒径大小，以产品收率、粉末的空气动力学径、休止角及体外沉积率为考察指标，通过正交设计结合多指标综合评价法优化最佳制备工艺。

Identical data inequilibrium stats and similar shock-induced reacting flow fields are gained for tworeaction models when projectile velocity is 3km/s. In this case, the molar fraction ofdissociated methane is so small that the frozen flow or a very simple reaction modelcan well describe the flow field of weakly shocked methane. As projectile velocityincreases, molecular methane is readily dissociated and some stable products are formed. Only do the numerical results of the 40 reactions involving13 species approach to the corresponding experimental results.

计算表明，当飞片速度低(3km／s)时，两种反应模型给出冲击状态参数的结果基本一致，因为这时甲烷气体冲击波后的成分变化很小，说明可以用更简单的化学反应模型描述高温甲烷的化学反应过程；当飞片速度增大时，甲烷分子迅速的离解，反应产物容易形成稳定的化合物，只有13组元40反应模型的计算结果才能与实验结果接近。

Many research works have shown that the microstructural control of TiAl alloys have an important influence on their mechanical properties, and also found that the grain size, the interlamellar spacing and the α〓/γ volume fraction of the microstructural features are the key factors of microstructural control.

已有的研究确定了TiAl合金的显微组织控制对其力学性能有着重大的影响，提出了TiAl合金的显微组织中晶粒大小，片层间距和α〓/γ相比例等是组织控制的主要因素。

Meanwhile, it is also illustrates that the smaller chromium carbides have less restriction to forming thin splats than larger ones, which beneficial to limit the size of pieces removed by impact of the sand particles, and the higher volume fraction of small chromium carbide may effect the erosion through enhancing interlamellar bonding of the splats which leads to increase the erosion resistance of the coating.

揭示了细小碳化物颗粒有利于获得扁平粒子厚度较小的涂层结构，可减小涂层冲蚀磨损过程中每次剥落的体积；较高含量的细小碳化物颗粒有利于提高涂层扁平粒子间的结合，从而提高涂层抗冲蚀磨损性能。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。