结构上

Materials for building must have certain physical properties to be structurally useful.

建筑材料必然有某些在结构上有用的物理性质。

This is the change in family structure.

这是家庭结构上的变化。

Especially,the subbranch of enterobacteriaceace made again four small branches as genus taxon.This tree also shows that bacilliform bacterium is distinct from each other in the NJ and MP trees.After all species on the tree are merged,the topological configuration of the unrooted tree of 16S gene is closed to that of the host range unrooted tree.However,the position of bacillus is greatly changed on both the unrooted trees.

将16S DNA的NJ树隐去所有的种，以属为单位所得到的以分枝形式的无根树在拓扑结构上与菌群分布含量所构建的无根树相近，但芽孢杆菌在两种无根树的位置中有较大的差异。

This indicated that under certain conditions it would get saturation in sublingual absorption of insulin.

当它与舌下粘膜的作用仅为30分钟时，就会在粘膜表面形成很多排列整齐的小孔，膜表面的粗糙度RMS也发生了显著下降；不同来源的粘膜在结构上存在差异。

On Selecting and Analyzing Units of Abbreviation Forms;2. Succinctness and orderliness in abbreviation of numerals lead to a tendency of class formation of components in the structure.

数词缩略语格式的简洁与有序导致其构成成分在结构上具有类化倾向，与其它形式的缩略语比较，现代汉语数词缩略语具有表意多样与信息密集的特

Two special structural features of the sulfonium salt were proved to stabilize its corresponding ylide and depress the 2,3-sigma rearrangement. One is that there is a trimethylsilyl in the end of the allylic double band. This silicon atom can stabilize a α-carbon anion and the corresponding ylide. Another is that there is hydroxy group in the beta-position of sulfonium atom. The oxygen of this hydroxy group may stabilize the sulfonium cation.

为了稳定生成的烯丙基硫叶立德，并抑制它的2， 3-sigma 重排反应，在硫叶立德结构上做了两方面的考虑：一是在烯丙基双键的未端引入硅基，利用硅原子对 a -碳负离子的稳定作用来稳定烯丙基硫叶立德；二是在硫原子的 b -位引入羟基，利用羟基氧对硫正离子的作用来稳定硫叶立德。

Compared with the developed countries, however, the supporting function of producer service is not effective enough in structure.

但是，和发达国家相比，我国生产者服务业对制造业的支持作用在结构上仍然存在一些不足。

Our investigations suggest that Influences of Hubei dialects in English pronunciation are showed from sound segments and suprasegmental features.

湖北方言在音系结构上有其自身的特点，大学生的方言发音习惯对英语语音习得产生了负迁移作用。

Its high speed is between 4000-500 stitch per minute.It adopts the designs of cam controlled swing needle bar,eccentric hook shaft compensation mechanism,hanging thread link feed mechanism,turing takeup lever,oil pump suto lubrication mechanism.

其最高缝速在4000-5000针/MIN之间，在结构上采用凸轮机构控制针杆摆动、偏心旋梭轴补偿机构、悬结式连杆送料机构、旋转式桃线、螺旋油泵自动润滑系统等设计。

A switch statement is an alternative to a chained conditional that is syntactically prettier and often more efficient.

除了陈述开关之外的另一种选择是使串链拴住有条件在语句结构上经常更有效率。

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。