查询词典 below zero

When the earth self-rotation parameter fis not equal to zero, the surface wind stress forcing with anticyclonic or cyclonic vorticity may form a corresponding warm or cold gyre in the South China Sea through the Ekman pumping.

当地球自转参数f≠0时，通过埃克曼抽吸作用可在南海分别产生与反气旋性和气旋性海面风应力强迫相对应的暖涡和冷涡。

In such a medium, the direction of the Poynting vector monochromatic plane wave is antiparallel to that of its phase velocity. Because of that, DNG displays some unusual electromagnetic properties such as backward-wave effect, negative refractive effect, perfect lens and a limit situation, zero index of refraction materials.

在这种材料中，单色均匀平面波的相速方向和坡印亭矢量方向是相反的，因此使双负材料表现出一系列反常的电磁特性如：回波效应、负折射效应、完美透镜效应和一种极限情况即零折射率材料等。

A few obvious features help us to walk efficiently: we move our arms and legs in antiphase, thus keeping the total angular momentum more or less zero.

几个明显的特点使我们走得很有效率：我们的胳膊与腿逆相位摆动，这样使总的角动量大致为零。

A few obvious features help us to walk efficiently: wemove our arms and legs in antiphase, thus keeping the total angular momentum more or less zero.

几个明显的特点使我们走得很有效率：我们的胳膊与腿逆相位摆动，这样使总的角动量大致为零。

Solving antiplane response of triangular hill or structure to incident SH waves by using the idea of assistant functions and division, the standing-wave equation constructed in domain Ⅰ must satisfy the governing equation and the zero-stress condition on the wedges.

利用分区和辅助函数思想求解三角形凸起对SH波散射问题时，在区域Ⅰ中构造的驻波，它应该同时满足三角形斜边上应力自由和控制方程，只有这样，所得到的结果才能是正确的。

In addition, the parameters sum of conditional heteroscedasticiity function tend to zero as aggregation level m approach to infinity, and conditional heteroscedasticity almost disappears.

最后，随著加总水准m愈大时，条件变异数方程式的参数加总趋近於零而条件异质性也跟著消失。

Following the strategy proposed in this article, expectation and variance of total hedge error would approach zero when hedge frequency approach infinity.

若依此避险策略，则当调整避险组合次数越频繁时，总避险误差之期望值和变异数亦会趋近於0。

ABSTRACT This paper presents results of online identification of hydrogenerators, a long-term running robust self-tuning regulator of generator excitation, governor power system stabilizer decoupled in multimachine systems, and an adaptive GPSS designed in frequency domain. 1. It presents a step-by-step zero cancellation method , accuracy weighted recursive least squares and approximate RLS algorithms, inferior limit of sampling time.

针对发电机励磁和调速系统建模与控制，针对多机电力系统的稳定性，本文综述了自适应控制理论及其在电力系统中应用的现状和发展方向后，在辨识、自适应控制结构和鲁棒性提高的措施上进行了研究，取得了水轮机调速系统现场辨识的成功，获得了长期稳定运行的鲁棒励磁自校正控制器、多机解耦的调速侧电力系统稳定器和频域设计的自适应GPSS。

In this paper we use pointwise modulus of smoothness to study approximation direct theorem and equivalent theorem for some linear operators and quasi-interpolant operators; Using pointwise modulus we discuss the strong converse inequality on K-functional; and using a modified weighted K-functional and weighted modulus of smoothness we study approximation with Jacobi weight on operator with non-zero first order moments.

本文利用点态光滑模ω_~(2r)来研究某些线性算子及逆中插式逼近正定理和等价定理；利用点态光滑模讨论其关于K-泛函的强逆不等式；同时利用一种改变的带权K-泛函和带权光滑模研究一阶矩不为零的算子的点态带Jacobi权逼近。

The clumsy Roman numerals were ousted by the Arabic figures we use to this day, and the zero sign was first employed.

形状笨拙的罗马数字被我们一直沿用至今的阿拉伯数字所替代，并且第一次使用了零的符号。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。