查询词典 envelope environment

One evening her husband came home with an exultant air, holding a large envelope in his hand.

可是有一天晚上，她的丈夫回家的时候手里拿着一个大信封，满脸得意之色。

A cataract is an opacity that develops in the crystalline lens of the eye or in its envelope.

白内障是一种不透明，开发中的晶状体眼或在其范围内。

Significant differences existed in the participation of leisure types among the sixth grade students with different background variables (gender, socio-economic status of the family, allowance, and offers in red envelope).

不同背景变项(性别、家庭社经地位、零用钱、压岁钱)的国小六年级学童，在休闲行为类型的参与上有显著差异。

By using slowly-varying envelope approximation, a family of solutions of the paraxial wave equation are found in theory, which represents a new family of ultrashort pulsed beams called ultrashort pulsed complex argument Sinc-Gaussian beams.

杨振峰 河北科技大学经济管理学院，石家庄 050018杨振军河北师范大学物理学院，石家庄 050016胡巍华南师范大学传输光学实验室，广州 510631利用理论解析推导的方法，在傍轴近似条件下，给出了一组新的超短脉冲光束的解析解，称为超短脉冲复宗量辛格高斯光束。

An explicit mathematical representation of the exact boundary of a ball Bézier surface was given by recurring to the envelope theory of the family of bivariate surfaces in the classic differential geometry, as well as the spherical coordinates and the Cramer's rule.

根据经典微分几何中双参数曲面族的包络原理，运用球面参数坐标和Cramer法则，给出了球域Bézier曲面边界的精确数学显式表达式。

There was this fan letter that a young fan sent me.. the letter was in an envelope which was the placed inside a plastic bag.

有一个小年纪的饭送了一封信给我，那信是在一个塑料袋包着的信封里。

The inverse envelope method can be used to extract the numerical value of the section of a fan-shaped.

依据扭制钻头工艺，建立了相应的数学模型，采用逆包络法求得扇形板截形数据，并用圆弧拟合以符合工厂生产的生产实际

Actually, a feller asked us to deliver this envelope.

实际上，一问费勒我们提供这个信封。

So construction department of Fijian province has emphasized that designer who is responsible for main project must design and check envelope structure of light steel.

本文针对现有轻钢围护结构设计中存在的问题及其产生的原因，根据现有规范的相关规定、相关研究和工程应用成果，指出轻钢围护结构设计的方法和应计算的内容，并给出了两个实例。

The method of calculating the internal force envelope of cable-stayed bridge by first order theory, multiplied by a modification factor for considering second order effect, is not adequate enough.

用一阶理论的内力包络图值乘以近似二阶增大系数的方法来设计斜拉桥的主梁尚欠合理。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。