反应率

Considering a predator-prey system with a kind functional reaction in which the predator species have no density restriction,no fishing,while the prey species have nonlinear density restriction and the constant invest.

考虑捕食者无密度制约、无捕捞，而食饵具有非线性密度制约和常投放率的一类功能性反应的食饵捕食系统，对其进行了定性分析，证明了在不稳定的正平衡点附近存在唯一的极限环。

The catalytic property was tested by hydrogenation ofα-octene, cyclohexene and nitrobenzene in ethanol, octane and cyclohexane were prepared at normal temperature and under hydrogen pressure in a 100% yield, respectively.

聚乙烯吡咯烷酮负载纳米钯的超细纤维状催化剂，钯纳米颗粒直径在15 nm以下，并且纳米颗粒负载分布均匀，在室温下催化α-辛烯的加氢反应，产率可达到100%。

Increasing the conversion of olefin,promoting the cracking reaction and...

提高烯烃的选择性转化、促进裂化反应并提高丙烯产物的选择性，有利于提高丙烯产率。

Results of a series of orthogonal design methods demonstrate that a crosslinked PAA superabsorbent composite with sodium tungstate, which is synthesized with a composition of 45.5 wt% of monomer, 0.4 wt% of crosslinker, 1.0 wt% of initiator, a neutralization degree of 83%, and a reaction temperature of 90℃, has a good water absorbency.

此外，通过对WPAA-Na的制备与吸水性能的一系列正交实验分析后得出，当单体浓度为45.5%、反应温度为90oC、交联剂浓度为0.4%、引发剂过硫酸钾浓度为1.1%以及中和度为0.85时，树脂的吸水倍率为佳。

Patients with COPD have similar change of VC and its componentsas the normal subjects after breathing heliox,but the increased rate of ERV is much higher,and this is possibly due Objective:To the chronic overexpansion of pulmonary alveolus.The decreased rate of IC is smaller in COPD patients than that in the normal subjects.

结论COPD患者呼吸He-O2后VC及其组成有健康人相类似的反应，不同的是ERV的增幅比率较健康人要大得多，这可能与COPD肺泡长期处于膨胀状态有关，但IC的减少率又比健康人要小，呼吸He-O2后IC何以会减少以及COPD组与对照组间的变化率何以存在显著差异？

Patients with COPD have similar change of VC and its components as the normal subjects after breathing heliox, but the increased rate of ERV is much higher, and this is possibly due to the chronic overexpansion of pulmonary alveolus.

COPD患者呼吸He -O2 后VC及其组成有健康人相类似的反应，不同的是ERV的增幅比率较健康人要大得多，这可能与COPD肺泡长期处于膨胀状态有关，但IC的减少率又比健康人要小，呼吸He -O2 后IC何以会减少以及COPD组与对照组间的变化率何以存在显著差异？

The yield of dimethl 1, 15-pentadecanedioate was 80.5% when the ozonide of malania olceifera chum oil reacted with hydrogen peroxide at 55℃ for 2 hours.

在55℃下用H2O2作为氧化剂，裂解反应2h，1，15-十五二酸二甲酯的得率达到80.51%。

The main results showed as follows:(1) Genomie DNA was extracted from H.axyridis Pallas by the method of modified CTAB.

改进后从异色瓢虫中所提取的总DNA得率和纯度较高，能满足PCR反应的需要。

The exchange yield is determined by paper chromatography and reaction rate constants are calculated at different pH values.

采用纸层析法测定了不同时间的交换率，计算了不同pH下的反应速度常数。

Extracting conditions such as temperature,the concentration of sulfuric acid are optimized.Test results show that leaching rate of vanadium pentoxide is up to 92% at the temperature of 90 ℃,with mass ratio of l...

实验结果表明，在MnO2用量3%、温度90℃、液固比2∶1、反应时间9 h、硫酸的浓度为20%、搅拌速度为1 500 r/m in的优化条件下，五氧化二钒浸出率为92%，比钠盐焙烧工艺高出10%以上，环境污染和能源消耗也得到有效控制。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！