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Its catalytic performance for oxidation of benzyl alcohol with H2O2 to benzyl aldehyde was investigated.

利用XRD、BET、SEM和H2-TPR等方法对合成的催化剂进行了表征。

Influence of the reaction condition for the yield of benzyl propionate was investigated. The traditional process was improved,and the reaction condition was optimized.

讨论了各种反应条件对合成丙酸苄酯的产率的影响，并对传统合成方法进行了改进。

On the basis of the dispersion relation, we investigated the properties of nonlinear surface waves. It is shown that there exist backward surface waves, with the phase velocity and group velocity opposite in direction. For transverse electric waves, the nonlinear wave equation is transformed into Bernoulli equation, and the exact solutions of magnetic fields are obtained.

在色散关系的基础上研究了非线性旋磁表面波的频率特性，揭示了该系统能激发后向表面波，其群速度与相速度反向；将反铁磁晶体中TE表面波满足的非线性波动方程变形为伯努利方程，用反函数形式给出了表面波磁场的精确解。

From the functional relationship between the flooding gas and liquid velocities derived from the two-film theory based on the Bernoulli equation,two parameters which are relative to the packing property were investigated.

根据从双膜理论出发由Bernou lli方程得到的液泛气速与液速之间的函数关系，考察了两个与填料有关的模型参数：一个是由填料比表面积a和床层空隙率ε所组成的填料因子a/3ε，另一个是本文定义的填料结构参数。

The theory of intermediaries has investigated the relationship between buying and selling strategies, and solved the Bertrand paradox, providing a new perspective for traditional model of industry organization.

中间层理论考察了企业的购买与销售策略的关系，解决了Bertrand悖论问题，为传统的产业组织模型增添了新的视角。

The boundary element simulation method for the interaction of oblique linear waves with long prismatic floating ocean structures with arbitrary cross section is investigated by using the second kind modified Bessel function. The singular integral method in a constant or linear element and the open boundary treatment are proposed.

采用第二类变形Bessel函数对斜向线性入射波与任意截面形状的长棱柱型浮式海洋结构物的相互作用问题进行了边界元法模拟，给出了常数元和线性元的奇异积分处理方法以及开边界的处理方式。

On the basis of this, we have chiefly investigated the problem of best approximation by polynomials in two variables.

在这个基础上，我們着重地研究了二元多項式的最佳逼近問題。

Having investigated the design of classical FIR digital filter, the authors put forward a method of FIR filter design based on Chebyshev best uniform approximation which can be used to separate potential anomalies.

在对经典FIR数字滤波器的设计方法进行研究的基础上，提出了一种可以用于位场分离的基于Chebyshev最佳一致逼近原理的FIR滤波器的设计方法。

No trials have investigated the effect of natural beta-carotene supplements on the risk of prostate cancer.

没有调查，审判对前列腺癌的风险自然测试效果-胡萝卜素补充剂。

MtDNA D-loop sequences and cranial morphometrics were used to analyze the phylogenetic relationships of bharal ( Pseudois nayaur szechuanensis ) populations. The habitat preferences of bharal were also investigated in Helanshan, Ningxia.

本研究利用粒线体核酸 D-loop 序列分析及头骨形态分析岩羊四川亚种（ Pseudois nayaur szechuanensis ）各族群间的关系，并针对宁夏贺兰山岩羊族群分析其栖地偏好。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。