查询词典 efficiency factor

The planting width of spring corn and spring soybean interplanting and the compound group constitution were perfected by factor efficiency analysis and computer simulation perfecting in the base of models.

根据建立的模型，进行了因子效应分析，并结合计算机模拟寻优，对春玉米间作春大豆的畦幅及其复合群体结构进行了优化。

The intraformational heterogeneity controls and affects the swept volume of the injectant in single sand layer, directly determines the waterflood efficiency, and is the key factor influencing the distribution of the remaining oil.

为此采用了细分开发层系、分层注水、开展流动单元精细研究等地质和开发措施，可以有效地降低各类非均质性对油藏最终采收率的影响。

Also demonstrated the efficiency of biological bypass for the therapy of patient with coronary heart disease by intramyocardial administration of adenoviral vector encoding for human vascular endothelial growth factor 121.

Rosengart小组也在1999年将编码血管内皮生长因子121的复制缺陷型腺病毒载体用于冠心病治疗并获得成功。

Based on the existence studies, by using document analyses, adopting scales, pathanalyses, factor analyses, experience verify, experiment verify, this study explores the testmental action process; the connotation, structure, function and developmental principle oftest mental quality; the possibility, actuality and efficiency of educational experiment.

本研究采用文献研究法、问卷调查法、路径分析法、因素分析法、经验实证法与实验验证法等研究方法，在借鉴国内外己有研究成果的基础上，从揭示中学生考试心理问题的发展现状出发，系统考察考试心理活动过程揭示考试心理素质的内涵、结构、功能及其发展规律；探讨运用心理素质教育实验解决其考试心理问题进而促进学生考试心理素质发展的可能性、现实性和有效性。

When researching the producer's behavior,such as factor input and output efficiency,using product function or cost function,researchers frequently ignore the economic inefficiency and assume that the productor can attain the production possibility frontier.

通常采用生产函数或成本函数研究生产者行为时，一般默认生产者总是在生产可能性边界安排生产，而忽略了由于产出的经济无效率所造成的偏差，这种偏差最终会影响要素替代弹性、要素最优配置及产出效率的准确测度。本文采用面板模型的三要素成本函数循环参数估计法，通过施加规模报酬不变的假设，估算了辽宁省工业部门二类行业的相对技术无效率、配置无效率程度及要素间的相对价格扭曲，并计算了资本、劳动、能源要素间的交叉替代弹性。

One of the potential advantages of the hypoxia-induced factor prolyl hydroxylase inhibitor approach to anemia therapy over ESA is improved regulation of iron absorption and iron recycling to improve the efficiency of iron utilization, partially via a mechanism of hepcidin suppression, to overcome functional iron deficiency.

用作贫血治疗的缺氧诱导因子脯氨酰羟基化酶抑制剂相对于红细胞生成作用刺激剂的一个优势是铁吸收和铁再利用的调节得到改善，提高了铁利用的效率，尤其是通过铁调节蛋白抑制机制，克服功能性铁缺乏。

A portable photosynthesis system made by PPSYSTEM Ltd. was used to study the photosynthetic properties of 3 cultivarsof Rubus idaeus under the field conditions. The results indicated that the individual leave net photosynthetic rates had 2 peaks during a day,an obvious photosynthetic midday slump was observed in A,there was a significant difference in midday depression among the 3 cultivars;evaporation rates of B and C had 2 peaks during a day,while A had 1 peak,and an obvious midday slump was observed in B and C;Stomatic conductance is the key factor of midday slump;Compared with B and C,A had a higher water using efficiency,which will consume less soil water.

利用英国PP-SYSTEM公司生产的TPS-1便携式光合作用测定系统，对3个树莓品种的光合特性进行了比较研究，结果表明树莓叶片光合速率日变化呈双峰曲线，A品种&日中低落&现象明显，B、C品种不甚明显；B、C品种的蒸腾速率日变化曲线基本上为双峰型，日变化过程中的&午休&现象非常明显，而A品种为单峰型，日变化过程中的&午休&现象不甚明显；此外，叶片气孔导度与叶片光合速率的日变化趋势基本一致，呈平行变化趋势，说明气孔导度是影响光合速率的直接因子；较B、C品种而言，A品种具有较高的水分利用效率，说明其更能节约并有效地利用土壤水分。

The results indicate that the PPV oligomer with biphenyl bridge is a cross form between two chains and tortuose derivative in the same chain. It reduces molecular symmetry and weakens %π-π% stacking effect among conjugated molecules in solid. This is perhaps the important factor that light-emitting diodes can increase fluorescence quantum efficiency.

结果表明，联苯桥联后的PPV齐聚物在结构上形成了链间交叉链内扭曲的构象，这种交叉扭曲的构象降低了分子的对称性，减弱了共轭分子在固体中的π-π堆积作用，这可能是减少荧光猝灭效应，提高固体发光器件效率的重要原因。

By the use of metal belt typed step-less variator manufactured with self-contained design,an experimental research was carried out on the frictional factor and transmission efficiency of metal belt transmission.

用自主设计制造的金属带式无级变速器，对金属带传动的摩擦因数和传动效率进行了实验研究。

Itamin D from the skin and diet is metabolized in the lier to 25-hydroxyitamin D (Figure 1), which is used to determine a patient's itamin D status1,2,3,4; 25-hydroxyitamin D is metabolized in the kidneys by the enzyme 25-hydroxyitamin D-1-hydroxylase (CYP27B1) to its actie form, 1,25-dihydroxyitamin D.1,2,3,4 The renal production of 1,25-dihydroxyitamin D is tightly regulated by plasma parathyroid hormone leels and serum calcium and phosphorus leels.1,2,3,4 Fibroblast growth factor 23, secreted from the bone, causes the sodium–phosphate cotransporter to be internalized by the cells of the kidney and small intestine and also suppresses 1,25-dihydroxyitamin D synthesis.5 The efficiency of the absorption of renal calcium and of intestinal calcium and phosphorus is increased in the presence of 1,25-dihydroxyitamin D (Figure 1).2,3,6 It also induces the expression of the enzyme 25-hydroxyitamin D-24-hydroxylase (CYP24), which catabolizes both 25-hydroxyitamin D and 1,25-dihydroxyitamin D into biologically inactie, water-soluble calcitroic acid.2,3,4

从皮肤和食物来的维生素D在肝中代谢为25-羟基维生素D（图1），被用来决定病人体内维生素D情况的1，2，3，4；25-羟基维生素D在肾中被25-羟基维生素D1羟化酶（CYP27B1）转变为有活性的1，25-二羟基维生素D 。1，2，3，4由肾产生1，25-二羟基维生素D是被血浆甲状旁腺激素和血清钙，磷水平紧密调节。1，2，3，4由骨分泌的成纤维细胞生长因子23使钠磷协同转运蛋白被肾和小肠细胞内化及抑制1，25-二羟维生素D合成。5 在1，25-二羟基维生素D作用下肾和小肠吸收钙及磷的效率增高(图1)。2，3，6 它也包括25-羟四- 24 -羟化酶的表达(CYP24)，且将1，25二羟基维生素D和25羟基维生素D异化成无生物活性，水溶性的维生素D3-23羧酸。2，3，4

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。