查询词典 two-by-four

Bama Mini-pig cloned embryos of 0.5-1.5 days old were surgically transferred to the oviductal ampulla of two female Bama Mini-pigs and two female Guangxi Luchuan pigs, of which the two female mini-pigs and one Luchuan pig returned to estrus, and one female Luchuan pig gave birth of one male cloned Bama mini-piglet.

利用刺入式手术胚胎移植法，将0.5~1.5日龄巴马小型猪克隆胚移植到2头巴马小型猪和2头陆川猪的输卵管壶腹部。其中2头巴马小型猪和1头陆川猪返情，另外一头陆川猪于2007年10月13日产下1头克隆雄性巴马小型猪。

Using ca pillary rube model of porous media,scaling coefficients of capillary pressure ar e deduced in this paper. The results show that the scaling coefficients, in the same porous medium, if any pair of two-phase (usually air-water two phase syst em is selected as the reference) capillary-saturation relationship is known, then the other two-phase (air-NAPL and NAPL-water) capillary-saturation relations hips can be obtained too.

从而得出对于同一介质中的任意两相流动，只要某两相的毛细压力饱和度关系已知，其它任意两相的关系都可以通过所得出的毛细压力折算系数而得到。

The two-dimensional structural units (such as silicon-oxygen tetrahedral sheet, octahedral sheet), interlayer space are assembled according to the sphere close packing manner, and the close packing layers parallel to {0001}. There are several mechanisms to release the difference in size while the silicon-oxygen tetrahedral sheet and octahedral sheet assemble the TO and TOT-type structural layers. The two types of structural layers with different interlayer space fitted together in six kinds of assembling modes and formed six kinds of crystal layers. The combinatorics analysis of the two-dimensional structural units revealed that there may be 28 kinds of TOT type interstradified minerals in six kinds of polysomatic assembling modes of interatradified structure. The structural layer is symmetrical for octahedron sheet in the structure of interstratified minerals and shows polarity characteristics.

结果表明，不同二维结构单元体（包括硅氧四面体片、八面体片、层间域的构筑基本符合球体紧密堆积原理，紧密堆积层平行{0001}；四面体片与八面体片构筑TO和TOT结构层时采取多种机制消除二者在二维尺寸上的差异；两种模式的结构层与不同类型的层间物组装形成六种组装模式的晶层；并通过二维结构单元体的组合规律的分析，计算出可能存在的28种TOT型间层结构，它们分属于6种间层结构多体性组装模式；间层结构中，结构层对于八面体片是不对称的，并在属性上表现出极性特征；间层矿物的晶层类型可用6种多体性组装模式加以表达。

Through Hilbert transform, a signal's plane trace can be get. There are two frequencies in the tested signal, so the signal's plane trace may be looked as the track of the out pole's end when two poles rotate around parallel axles. Using the knowledge of motion synthesis in theory mechanics, a formula to describing the change of plane trace's step length and angle for two-frequency be get. So we may prolongate the tested signal's plane trace from the echo's initial arriving moment, and get a certain length of the signal's prolongation.

通过Hilbert变换可得到测试信号的平面迹线，测试信号中只含有两个频率成分，视为双频信号，双频信号的平面迹线相当于两连杆绕平行轴转动时外杆杆端迹线，利用理论力学中运动合成和瞬心知识，推导出双频信号平面迹线步长平方满足余弦线性复合函数，而迹线转角可视为线性变化，据此可对回波到来之前的测试信号平面迹线作延长，得到一定长度的信号延展段，信号延展段与实测段作差可得到一次、二次回波的第一个波峰值。

This thesis includes two parts. One part studied the two photon excited luminescent properties of thirty pyridinium compounds in solution, another part studied the two photon excited luminescence properties of HMASPS and HEASPS in polymer matrix.

论文分为两个部分：第一部分研究的是吡啶盐溶液的双光子上转换性质，第二部分研究的是吡啶盐HMASPS和HEASPS在聚合体系中的双光子上转换性质。

Secondly,two regulatable current sources for exicitation of magenetic powder dynamic brake are studied respectively with buck and interleaving two-transistor forward topology. In the power supply with interleaving two-transistor forward topology design,simulations are implemented with Saber simulator,thus the best parameters are achieved which ensured the stability and dynamic characteristic.

二、分别用 BUCK 式和交错并联的双管正激式电路拓扑，研制了磁粉制动器的直流励磁电流源，其中对于交错并联双管正激式的电路进行了基于 Saber 的仿真，确保了电路参数的选取能够保证电路稳定性与动态性能要求。

In this DVD, Gil Rimmer simultaneously develops two characters, Francis and Paulo, who are classic pugilists in a fictional turn of the century metropolis. This first in a two DVD series focuses on creating the faces and heads of the two fighters, using dynamic silhouettes, rhythms, graphic design and composition principles.

在本DVD中GIL同时制作了两个卡通角色，它们是Francis and Paulo，两个century metropolis出品科幻小说的著名的拳击手，本DVD是一套2DVD中的第一张，着眼于创建两个角色的头部与面部，其中应用了动感轮廓，图形设计，合成原理等。

The reconstruction problem is ill-posed, so two optimal criterions, the least module and the smoothness criterion base on Tikhonov regularization technique, are introduced into reconstruction algorithm. Many regularization parameters choice strategies are investigated, and the TPA(Two—Parameter Algorithm) strategy which is based on the Morozov discrepancy principles, is implemented in two regularization reconstruction algorithms.Numerical experiment results show that the nonnegative and smoothness constraint condition can overcome the difficulty of iteration semiconvergent, preconditioned technique can improve convergence rate and reconstruction accuracy, smoothness regularization criterion can meliorate ill-posed problem of reconstruction and enhance iteration stability, and the TPA is an effective strategy of regularization parameters choice.

数值试验表明：在共轭梯度法中引入非负约束和光滑约束改善了迭代的&半收敛&性，非负约束保证了解的非负性，光滑约束抑制了重建解的振荡现象，约束算法的重建精度与无约束算法相比大幅度提高；在约束共轭梯度重建算法中引入预优技术，可以加快算法的收敛速度，提高迭代的稳定性和重建精度；引入光滑准则的正则化技术可以有效改善图像重建问题的不适定性，加快迭代的收敛速度，提高迭代的稳定性和图像重建质量，计算正则参数的TPA算法在闪光照相图像重建中是有效的。

Two types of sensilla trichodea, two types of sensilla chaetica, two types of sensilla basiconic and one type of Bhm bristles were distinguished with the shapes and distribution of sensilla.

触角感器共有4种，分别为毛形感器、刺形感器、锥形感器、Bhm氏鬃毛。其中，毛形、刺形、锥形感器各有两种类型。

Two weeks ago, those two did not want to leave their little hideaway at the bottom of their cage, Sher Aqa said, pointing to two monkeys.

Omar指着两只猴子说：&两周前，我把它们俩放出笼子的时候，它们居然都不愿意出来。&

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！