This work might lead to develop many better methods or means of preventing and controlling dysenteric diarrhea. To elucidate the role of H-NS protein in bacterial physiology, the hns gene insertion and deletion mutants were constructed with RecA and Red recombination system. Then, growth curve and invasion ability of wild strain and deletion mutant were studied.
为了更深入的了解hns基因在细菌生命活动中所起的作用，我们首先利用RecA重组系统构建了痢疾杆菌2457T hns基因的插入突变体；随后，对基于Red重组系统的痢疾杆菌2457T缺失突变体的构建方法进行了摸索并成功地敲除了hns、hdeA、hdeB、yhiE和yhiF 5个基因，研究表明延长同源臂的长度可以明显提高同源重组的效率，缩短构建缺失突变体所需的时间。
In this test, the two braces in east side buckled in sequence, then the two braces in west buckled after a long time. Large nonlinear strain happened on the local buckling area of the two east braces. Lead to the in-plane buckling braces fractured earlier than the second test of TCBF.
此次试验发现东侧两支斜撑先后发生挫屈后，西边两支斜撑相隔甚久才发生挫屈，造成前述东侧两支斜撑挫屈处之非线性应变过大，提早在出现局部挫屈现象后而有细微裂缝发展，最后导致斜撑较面外挫屈之TCBF之H型斜撑更早破裂而整体结构寿命较斜撑面外挫屈构架更短。
There is only one small midline incision overthe upper neck and the strain on the lead extension occurs onlywith flexion and is minimal with lateral flexion and rotation, which contributes to overall stability of this system.
中线径路方法在颈部上方仅有一个小小的切口，仅当屈曲时拉紧导线，在侧曲和旋转时张力最小，从而使这个系统非常稳定。
It is highly recommended to use a strain gage with lead wires attached.
这是强烈建议使用应变片与铅电线重视。
In the tensional situation, peoples strain will be magnify and bring many harms to body, and it also can diminish ability of judgement and rational behavior. Pubic panic may lead to the disorder of society, even to a social crisis, which will be not good for the controlling of PHE.
心理张力过高会带来一系列的危害：对生理健康不利，个体判断力与理性行为能力下降，群体恐慌会导致社会秩序混乱，甚至演变成一场社会危机，不利于突发公共卫生事件的应对控制。
Having high blood pressure puts a strain on the heart and can lead to coronary heart disease.
有血压高的压力把应变对心脏和可导致冠心病。
Following results have been obtained: a novel method of surface modification of transparent silicon rubber with plasma to adapt it to cell adherence and spread was developed, and a set of elastic matrix cell culture devices based on the method was developed; it is found that MSCs oriented 90 degrees to the applied cyclic strain field and aligned, the reaction of MSCs to the cyclic stretch is related to the loading regimen and aging of MSCs, cyclic strain may lead to differentiation of MSCs.
主要研究结果有：研究出利用等离子体对硅胶进行表面改性以利于细胞粘附和铺展的新方法，并基于此研制出了可动态加载的应变均匀的新型弹性基底细胞培养装置。发现MSC在受到交变拉伸加载后沿与受力垂直的方向排列的现象，该现象与加载的条件和MSC的老化程度有关，交变拉伸加载可能有促进MSC分化的趋势。
If the strain exceeds the tolerable limit, the Si-O-Si linkage can break ea si ly at high temperature and lead to the creation of po si tive and negative charges on si licon and oxygen atoms, respectively.
如果张力超过耐受极限，硅氧烷鍵就很易在高温下发生断裂并在硅和氧原子上分别形成正负电荷。
You then can use the measured excitation voltage in the voltage-to-strain conversion to compensate for lead losses.
然后你能通过测量励磁电压在voltage-to-strain转换来补偿引导的损失。
The increased workload can put a strain on the heart, which can lead to heart abnormalities that are usually first seen as enlarged heart muscle.
这种工作负载的增加会导致心肌劳损，最后心脏异常的初发症状就是心肌变大。
Under the premise increasing load carrying capacity with same degree, HFRP could lead a both significant increase of rupture strain and deformation capacity and a notable decrease of strengthening costs; and the stiffness of the HFRP strengthening beams just a little lower than that of CFRP strengthening beams.
在提高相同承载力的前提下，既能显著提高被加固梁的延性，又能大幅度降低加固成本，而构件刚度仅略低于CFRP加固构件。
According to the results of the comparison, screened and got the strain of the highest lead-resistant.
结果表明：土壤中铅的抗性与高速路段受铅的污染年限存在着一定的正比关系。
Set bring number result in lead to give rise to 例: Rapid growth is also giving rise to a host of problems that could strain our social fabric.
这不仅造成了几千万农民的外流，给社会的安定带来了压力，且造成了犯罪率的直线上升。
If the strain exceeds the tolerable limit, the Si-O-Si linkage can break easily at high temperature and lead to the creation of positive and negative charges on silicon and oxygen atoms, respectively.
如果张力超过耐受极限，硅氧烷鍵就很易在高温下发生断裂并在硅和氧原子上分别形成正负电荷。
As an example, I have recently proposed5231 that water in the presence of finite localized strain within fault gouges may lead to the modification of mineral textures, involving dynamic recrystallization and maybe phase transformations of stable minerals into metastable polymorphs of higher free energy density.
例如，我最近曾提议，水在断层的沟中以限定于当地应变的状态存在时，可导致对矿物纹理进行改变，同时涉及动态的再结晶过程，以及或许稳定矿物向化亚稳的更高无能量密度的惰形体的相变。
The transverse compressive strain will certainly lead to the relaxation of the longitudinal tensile stress.
磁处理引起的横向收缩变形必然会使得试样中的纵向拉伸应力松弛。
Coli and the disruption of pcaH in strain NCIMB 10467 has lead to loss of its ability to catabolize protocatechuate.
而pcaH在NCIMB 10467菌株中的敲除则使该菌完全丧失了代谢原儿茶酸的能力。
The results show that, the Cu adatom may have an impact on the substrate as deep as 10 layers and will lead to ununiformity of the distribution of surface strain and local pressure.
研究发现：表面吸附原子导致的Cu基体晶格畸变的范围可多达10个原子层，同时引起了基体表面应变状态与局域应力的非均匀分布。
Plasticine is used in the plane strain experiment and pure lead in the axisymmetric one.
首先采用塑胶泥和纯铅两种材料进行流动规律实验。
Simulation results indicate that the maximum points of the stress and strain are all in the non-uniform distribution part of the lead-free plastic ball grid array device.
模拟结果表明，无铅球栅阵列封装器件上的应变、应力最大点均发生在焊球分布不均匀处。