查询词典 asymptotic expansion

Research on development methods and application of CAD system of prac tical sheet metal expansion ;2. A frame expansion method of operator is used to the phase shift operator of split-step Fourier propagator.

针对裂步Fourier传播算子在速度强横向变化介质中的不足，将算子的框架展开方法应用于Fourier传播算子中的相移算子，提出了一种波场传播的局部裂步Fourier传播算子，并把它应用于波动方程叠前深度偏移成像。

In order to meet design requirement of sidelong edge and to obtain right expansion graph of the edge, the expansion equation of sidelong edge is derived in this paper according to manufacturing procedure of rotary blade .

为保证正切刃的设计要求，获得正确的展开线，按照旋耕刀的生产制造工艺，推导了正切刃的展开线方程。

Oligoclonal expansion T cells could be detected and Vβ21 oligoclonal T cells were identified in all 3 cases.Conclusions The skew distribution and clonal expansion of TCR Vβ subfamily T cells could be found on the patients with CML.

结果 3例病人仅存在3～9个TCR Vβ亚家族T细胞，部分Vβ亚家族T细胞呈寡克隆性增殖，Vβ21的寡克隆T细胞见于全部的3例病人中。

Results The major occupational hazards in the expansion project were sulfuric acid, hydrochloric acid, ammonia, sodium hydroxide, cyanide, nickel and its compounds, formaldehyde, organic solvent and noise. Many protective measures would be carried out in this expansion projects.

结果该建设项目在生产过程中存在的主要职业病危害因素有硫酸、盐酸、氨、氢氧化钠、氰化物、镍及其化合物、甲醛、有机溶剂、噪声等，根据有关规定企业拟采取相应的措施。

To the soft coal, there are once crack density increment and once crack expansion, and the expansion is import to fracture. It is found that the relation between the fractal dimension of crack and the abutment pressure is polynomial expression.

研究表明，裂隙分维和支承压力具有良好的多项式定量关系；同时，通过顶煤压裂试验得出了基于损伤力学的顶煤压裂本构方程，损伤变量的变化验证了裂隙演化规律的正确性。

Applying the boundary condition in the interface between the uniaxial anisotropic medium and free space, the surface of the conducting sphere, the expansion coefficients of electromagnetic fields in terms of spherical vector wave function in uniaxial anisotropic medium are obtained, and then the expansion coefficients of scattering fields and radar cross sections can be obtained.

通过矩阵方程的求解和球B(来源：e3ABC论文网www.abclunwen.com)essel函数的大宗量渐进表达式，我们给出了各向异性单轴介质球结构对平面波电磁散射的数值计算结果，并和其他的数值计算结果进行了比较，其结果正如我们所预料的一样，达到了预期的结果。

Li_2O-Al_2O_3-SiO_2 System low thermal expansion porcelains based on spodumene were stud- ied systematically to obtain the ceramic bodies with the thermal coefficients lower than 2×10~(-6)/℃(20~800q℃) near zero expansion.

本文系统地研究了以锂辉石为基础的Li_2O-Al_2O_3-SiO_2体系低热膨胀陶瓷，获得了热膨胀系数小于2×10~(-6)/℃以及接近于零膨胀的陶瓷坯体。

B Osseous - this relates to avoiding the excessive over-expansion of arches against the cortical plates (which ultimately leads to relapse) and the management of sutural relapse after maxillary expansion.

骨-这涉及到避免过度过度扩张的拱门对皮质板和管理上颌缝扩张后复发。

In the downstream, a sudden expansion microchannel with asymmetric pairs of microelectrodes is designed. The multi-electrodes are formed beside the expansion microchannel and result in the trap of micro-particles. AC electric potentials are applied to each pair of asymmetric electrodes creating a non-uniform electric field. The tangential component of the field produces a force on the induced charges in the diffused double layer.

此外在扩张管道上采用一种可调控式的微粒子撷取装置，主要是在扩张管道的侧边镀上多对的电极，利用电极间电场所引起的局部的电渗流(Electro-Osmotic Flow， EOF)和轴向压力驱动流彼此间相反的运动方向，进而在管道壁面电极区间产生回流区。

The breaking load, the maximal stretch elongation and stiffness of the skin on the back of the animal were measured using a tensiometer at the moment of expansion and then at 1, 2, 3 and 6 months after expansion.

以豚鼠背部为扩张模型，制备样本，用拉力试验机测定扩张后即时、1月、2个月、3个月、6个月皮肤的断裂负荷、最大拉伸长度及最大钢度。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。