大底

The study suggested that the optimal method not only enhanced the affinity and the maximum reaction velocity of α-amylase with its substrate, but also improved the accuracy and the sensitivity on the activity of α-amylase from M. separata larvae in assays, whereas it was not the optimal method for determining the activity of α-amylase from T. molitor, C. pipiens pollens and M. domestica larvae.

结果说明，在该优化体系下，粘虫α-淀粉酶与底物的亲和力增强，最大反应速度增大，测定酶活性的准确性和灵敏度显著提高；同时该优化体系也可作为测定德国小蠊α-淀粉酶活性的优化方法，但不适合作为黄粉虫、淡色库蚊和家蝇α-淀粉酶的最优化测定方法。

Sergio Marchionne likes to be at the centre of attention and he got his wish in Detroit this week.

马尔基翁内喜欢成为关注的焦点。上周在底特律，他实现了自己的愿望。考试大论坛

Is boiling greatly assumes the circular, the diameter 6.12 meters, the water depth 1.5 meters, is truly one gigantic incomparable "the great pot", in the pot has three spiracula, the bottom of the pot water temperature is highest may reach 102℃.

大滚锅呈圆形，直径6.12米，水深1.5米，确实是一口硕大无匹的&巨锅&，锅内有三个喷水孔，锅底水温最高可达102℃。

The electron-rich and sterically hindered ligand 9d provides the best enantioselectivities (up to 97.8 % ee) for various chalcones as the substrates.

其中富电子且空间位阻较大的配体gd对查耳酮类底物表现了最好的手性诱导能力，加成产物的ee值达到94.7一97.8%。

Also the concrete structure's service life may be threatened by the negative pressure occurred when waves separate from the subface of the structures.

另外当波浪离开上部结构底面时产生的负压力作用对混凝土结构的耐久性也是一个很大的威胁。

Also the concrete structures service life may be threatened by the negative pressure occurred when waves separate from the subface of the structures.

另外当波浪离开上部结构底面时产生的负压力作用对混凝土结构的耐久性也是一个很大的威胁。

To control the base design of power machine using numeric,taking the blower as an example,the key problem affected by power machine load,base and subgrade-the off-center value between centroid of control load and poid of foundation subface was analyzed.The relationship of calculating maximum amplitude of machine foundation and permitting amplitude was discussed.

以风机为例，对动力机器荷载、基础和地基共同作用的关键问题—控制荷载重心与基础底面形心的偏心值进行分析，并对机器基础最大振幅的求解与允许振幅的关系进行了论述，以便对动力机器基础的设计能从数值上加以控制。

Under confused sea condition, the structures may subject to very strong w ave impulsive 1oad due to slamming by the wave with significant crest when waves propagate underneath the structure and surge up to its subface. Previous studies indicate that impact pressures are characterized by an initial peak pressure of considerable magnitude but of short duration occurs, followed by a slowly-varying uplift pressure of less magnitude but of considerable duration, and which typically is first positive, then decreases to zero and becomes negative, In hostile sea state, the peak pressures may cause the damage of the horizontal members of the structures or make the whole superstructure collapsed.

若这些海上建筑物的上部结构底高程较低，在恶劣海况下当大波浪在其面板下面通过并与之接触时，面板下面除了作用有强度变化较缓慢的波压力外，在波峰刚接触到面板时尚存在着历时很短但强度极大的冲击压力，这种极强冲击荷载会引起建筑物的整个上部结构失稳或造成局部破坏。

Objective To identify the mechanisms of the subthalamic nuclei high frequency stimulation for Parkinson's disease.

目的 研究丘脑底核高频电刺激对大鼠黑质－纹状体系统的影响。

Stereotactic techniques were used to implant one co-axis electrode in each subthalamic nucleus.

各组大鼠均利用立体定向的方法在双侧丘脑底核植入同轴电极。

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。