成双的

Depending upon reaction conditions, the product may be a polyketone formed b y addition polymerization of the ketene double bond

随着反应条件的不同，产物可以是由烯酮的双键加成聚合得到的聚酮。

Results The data were positively related to the antigen cotent in a limited rang. As the relationship between the antigen content and the data of ELISA assay were analysed with 2 - log curve, it was feasible to compare the allergen activities , and to predict the difference of mite allergen products.

结果当抗原含量在一定范围时，抗原含量与ELISA结果成正相关，利用双对数曲线分析抗原浓度与ELISA结果的关系，既能反映变应原的相对含量和活性，又能预测不同变应原溶液中变应原组成成分的差异。

The fatigue life followed the logarithmic normal distribution or the two-parameter Weibull distribution by the probability regression method.

为研究预腐蚀对疲劳寿命的影响，进行30CrMnS iN i2A和LC4CS试件加速预腐蚀不同时间后的成组随机谱下的疲劳试验，采用概率回归方法对预腐蚀疲劳寿命分布特性进行检验，表明可采用对数正态分布和双参数威布尔分布描述疲劳寿命分布特性。

In the Win98 function in those who need more powerful driver of the mouse can be adjusted, and in Win2000/XP system, it is very easy to achieve: Right-click "My Computer", select "manage", and then in the pop-up management window and select "Device Manager", a "mouse and other pointing device", double-click the following PS / 2 mouse, pop-up its property window, click on the "Advanced Settings", the following "sampling rate" set to " 200 ", click OK to exit.

在Win98中需要通过那些功能较强大的鼠标驱动程序才能调整，而在Win2000/XP系统中，则很容易实现：右键单击"我的电脑"，选择"管理"，然后在弹出的管理窗口中选择"设备管理器"，展开"鼠标和其它指针设备"，双击下面的PS/2鼠标，弹出其属性设置窗口，点击"高级设置"，将下面的"采样速率"设置成"200"后，点击确定退出。

Diketoreductaseis a class of new enzyme, and compared with other oxidoreductase, whose uniqueness lies in its ability to restore at the same time reduced to two hydroxy carbonyl and a high degree of stereoselectivity.

双羰基还原酶（Diketoreductase，简称DKR）是一类全新的酶，与其他的氧化还原酶相比，其独特之处在于它能够同时还原两个羰基还原成羟基，并有高度的立体选择性。

Eustele The STELE arrangement found in most gymnosperms and dicotyledons in which the vascular tissue is arranged into a ring of discrete bundles separated by medullary rays, all contained within a single ring of endodermis and pericycle.

真中柱：发现于大多数裸子植物和双子叶植物的中柱类型，其维管组织由不连续的，被髓射线分开维管束排列成环状。所有的微观组织都包含在内皮层和中柱鞘以内。

This molecule possesses C~2 point group symmetry. The structures of the complexes B and C are completely same.

配合物B和C具有完全相同的结构，它们是以4个苯甲酸根为桥，2个phen和2个C~6H~5COO^-为端基的中心对称双核分子，其中6个苯甲酸根的成键状态可分为3种状况。

Love's Fidelity Set me whereas the sun doth parch the green, Or where his beams do not dissolve the ice: In temperate heat, where he is felt and seen; In presence prest of people mad or wise; Set me in high, or yet in degree; In longest night, or in the shortest day; In clearest sky, or where the clouds thickest be; In lusty youth, or when my hairs are grey: Set me in heaven, in earth, or else in hell, In hill or dale, or in the foaming flood; Thrall, or at large, alive whereso I dwell, Sick or in health, in evil frame or good, Hers will I be; and only with this thought Content myself although my chance be nought.

爱的忠诚不论我在南方冒着赤日炎炎，或在阳光无力融化冰雪之处，或在阳光和煦的温暖国土，不论与狂人为伍或在哲人之间，不论我身份是高贵或是低贱，不论是长夜漫漫或白昼短促，不论是晴空如洗或乌云密布，不论是年华正茂或双鬓斑斑；不论我在人间，地狱或天堂，在滔滔洪水中，或在高山深谷，不论患病或健康，快乐或忧伤，不论住在何处，自由或为奴，我永属于她；哪怕我的希望永成泡影，这念头已令我满足。

Driving the bimorph cantilever at one of its eigenfrequencies with an appropriate force feedback allows obtaining an effective Q-factor up to 103 in water from its original amount of ～ 40, that is, the sensitivity can be improved.

当双晶片在它的某一本征频率下被激励，通过调节一个适当的反馈力，它的机械谐振品质因数在水中可以从40增强到103，因此成像灵敏度获得显著改善。

Methods Mouse models of tibia fracture healing were established, and callus samples were collected 1, 3, 7, 14, 21 and 28 days after fracture. The development of callus and new bone formation were evaluated with roentgenology, Micro-CT and tetracycline double labeling method, and the expression of HIF-1α, vascular endothelial growth factor, Runx2 and ALP in callus were detected with RT-PCR, Western blotting and immunohistochemistry. The relationship between HIF-1α and fracture healing was analysed.

建立小鼠胫骨骨折模型，骨折后1、3、7、14、21、28 d取材，应用X线摄片、Micro-CT和四环素荧光双标记技术，观测骨痂组织的演变和新骨形成状况；采用RT-PCR、Western blotting和免疫组织化学方法，检测骨痂组织细胞HIF-1α、血管内皮生长因子和成骨性标志物（Runx2和ALP）的表达状况，分析HIF-1α与骨折愈合进程的关系。

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！