孪生的

If the power series ∑anxn an ∑anxn and ∑bnxn satisfy the condition r =∑bn xn, we obtain the twin combinatorial identity theorem between the sequences {an} and bn}.We also obtain some specific twin combinatorial identities by using the expansion on the binomial expression formula, including two expansions of combinatorial number(rsn and ...

如果幂级数∑anxn与∑bnxn满足条件r＝∑bnxn 时，获得数列｛an｝与｛bn｝之间孪生组合恒等式的定理，应用在二项式定理等展开式上得出具体的多组孪生组合恒等式，其中包含组合数的两种展开法，Bernoulli数直接表达式的新证等结果。

I always confound ed him with his twin brother.

我总分不清他和他的孪生兄弟。

I always confounded him with his twin brother.

我总是分不清他和他的孪生兄弟。

In prime number distributed research process,and through established one kind of new sieve method and the stair theory,this article obtained about three group of prime number distribution recurrence formula: The 1st is not bigger than x the prime number integer recurrence formula;The 2nd is not bigger than x the twin prime integer recurrence formula;The(3rd Recurrence) formula.

在研究素数分布过程中，通过创立一种新的筛法与台阶理论，得到关于素数分布的三组递推公式：不大于x的素数个数与孪生素数对数量的递推公式；不大于x的孪生素数个数的递推公式；任意偶数x≥6表为两个奇素数之和与孪生素数对数量对数的递推公式。

The results show that twinning could make great contribution to the deformation at room temperature.

主要考察拉伸和压缩变形中孪晶的微观特征，晶粒尺寸和织构对于孪生变形的影响，并从定量上计算孪生对于应变的贡献。

BRIDGE You know its leather when we ride Wood grain and raw hide Doing what we do, watching twins getting high Gurl you keep it so fly with you sweet hunnybuns You was there when the money was gone You'll be there when the money comes You know its leather when we ride Wood grain and raw hide Doing what we do, watching twins getting high Gurl you keep it so fly with you sweet hunnybuns You was there when the money was gone You'll be there when the money comes fa real though

桥梁 您知道它的皮革当我们乘坐木五谷和未加工皮做什么我们做，观看孪生得到您保留它的高的Gurl 因此飞行与您甜hunnybuns 您那里在金钱去您将是那里金钱来您知道它的皮革当我们乘坐木五谷和未加工皮做什么我们做，观看孪生得到您保留它的高的Gurl 因此飞行与您甜hunnybuns 您那里在金钱去您将是那里金钱来fa 真正虽则

After transfer of 13 twin blastocysts to recipients, 3 and 2 twin fetuses were obtained, These findings indicate that monozygotic twin mice can be produced more efficiently from F1 embryos than from CD-1 embryos.

在添加生长因子与未添加生长因子的胚胎中，分别有92％和86％的胚胎发育为孪生囊胚。13对胚胎移植后，分别产生了3对和2对孪生小鼠。

Many nanotwins were formed in this triangular region. HREM observations showed that nanotwinning dislocations were nucleated at noncoherent twin boundaries with the local stress concentration, and the nucleation is related to the dislocation dissociations at the boundary ledges. The proceeding of these nanotwins is the homogenous shears of 1/6 [11〓] twinning dislocations, which is that the trailing 1/6 [112] twinning dislocations repel the leading twinning dislocations to proceed in the (111) planes. Therefore, twinning dislocations at the twin tip appear to be on one side of twin, forming a noncoherent twin boundary with a semilenticular shape.

在此三角区域内发现许多纳米孪晶的存在，通过高分辨电镜手段观察到纳米孪晶中的孪生位错是在具有原位应力集中的非共格入射孪晶界上形核的，纳米孪晶的形核与界面的台阶位错及其位错分解反应有关，纳米孪晶的行进是1/6[11〓]孪生位错均匀切变机制，即每一个（111）孪生面上对应一个孪生位错，其中拖尾的1/6[11〓]孪生位错将会推动领先的孪生位错行进，于是在形变孪晶头部位置的孪生位错排列常常出现在形变孪晶的一侧界面，形成一个半透镜状的非共格孪晶界。

As the twinborn shear department of {112}m is obstructed, slipping department {111}P of parent phase begin to work, rely on dislocation"s slipping, coordinate flaky martensite"s twinborn shearing and form dislocation inferior structure at M phase corresponding plane(contain the interface between parent phase and martensite phase).

在本实验电镜照片上可以观察到在片状马氏体亚结构同时存在相变孪晶和形变孪晶，当{112}_m孪生切变系受阻时，母相中滑移系{111}_p启动，依靠母相中的位错滑移协调片状马氏体的孪生切变。

Based on our results, it is incorrect to combine the twined and untwined hexagonal structure with Form-Ⅰ and Form-Ⅰ'in the literature, and the melt-point is the direct proof.

纠正了文献中将孪生和非孪生作为区分Form-Ⅰ和Form-Ⅰ'判据的不确切看法，证明熔点是其直接的判据。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。