查询词典 projection gradient method

Higher temperature gradient, larger heat transfer coefficient and proper heat dissipation from the bottom of crucible are necessary for Bridgman method and also important for optimization of growth technique.

5较大的温度梯度，较大的换热系数和适量的底部冷却是坩埚下降法晶体生长的必备条件，也是工艺优化的重要方向。

Compared with the density gradient centrifugation method, this protocol was time-saving and low cost and high efficiency.

本研究建立的方法与通常采用的密度梯度离心法相比，具有耗时短、对离心机的要求不高，且所提取的mtDNA产率高、结构完整等特点。

Among them,CsCl density gradient centrifugation is often used,because product purity is good by this method.

在纯化病毒的方法中，氯化铯密度梯度离心法是较为常用的方法之一，方法简便易行，获得的病毒样品较纯。

Methods: Mononuclear cells were obtained from human peripheral blood by the method of Ficoll-Hypaque density gradient centrifugation.

目的：观察白藜芦醇对人外周血单核/巨噬细胞CC型趋化因子受体5(CCR5)表达的调节作用。

BACKGROUND: There are many in vitro selection method of sperm, and swim-up and density gradient centrifugation are commonly used.

摘要背景：精子体外优选方法很多，最常见的是上游法和密度梯度离心法。

Methods The hMSC were obtained from bone marrow specimens by gradient centrifugation method.

目的研究人骨髓基质细胞体外培养及向成骨细胞诱导分化的实验方法。

Because of using shielding-grounding resistance gradient logging method, the rate of logging Class A hole has reached 100% in the practical work.

不仅为煤层结构划分增加了一种有效的参数，而且由于解释点为曲线的极值点，划分厚度也更加准确。

Based on the working condition of the tractor, a new type of electric tractor drive system which combines a motor and a gear, and the evaluation index and the calculation method for dynamic performance of electric tractor are suggested; taking an electric tractor drive system as design object, the balance graph of drive-resistance force, climbable gradient under different shifts, and continuous working time are calculation analyzed.

根据电动拖拉机作业特点，提出了一种电动机和变速箱相结合的电动拖拉机传动系统结构方案，并给出了电动拖拉机动力性能和经济性能评价指标以及电驱动系统主要参数的设计计算方法，以基于串励直流电动机的某型号小四轮电动拖拉机电驱动系统为设计实例，计算分析了该电动拖拉机的驱动力-行驶阻力平衡图、不同挡位下的爬坡度以及连续作业时间。

Application of complex conjugate gradient method and fast Fourier transform to study multitudinous scattering in near-field optics.

利用共轭梯度法与快速傅立叶变换相结合的方法来研究近场多体散射问题。

On the other hand, an iterative hard shrinkage algorithm is obtained by using the generalized conditional gradient method, as well as convergent theorems for Solutions and stopping criterion.

此外，利用广义条件梯度法得到了迭代硬阈值算法，并给出了解的收敛性定理和停止准则。

Effective local search tactics reaches local searchers when they are ready to buy - with every way that it is possible for them to buy from you.

有效的地方搜索策略达到当地的搜索，当他们准备购买-以各种方式，这是他们有可能从您那里进行购买。

The first two are periodic sentences for their beginnings; and the fifth and the last are also periodic sentences each for the embedding of a parenthetic structure.

1960年代中后期，当战后女权主义和当时的许多其他抗议运动在西欧和北美发展成某种势力时，性别的概念演绎成补充和延伸生物性别差异的概念。