查询词典 envelope detector

An official-looking envelope arriving in the post.

邮寄来的正式信封。

Without this water envelope, the oil and the sand could not be separated by the water-based extraction methods we now use.

如果没有水的包覆，油和砂子就不能通过人们现在使用的水基萃取法进行分离。

To develop the missile quasi-linear model, a state space model is established for missile dynamics, and function substitution method is used to describe the nonlinear dynamics of missile as linear combinations of functions of given time-varying parameters. With the minimizing variation range of model parameters over the whole design envelope as the optimum aim, linear programming optimum arithmetic is used to determine the model parameters at selected grid points.

为了建立导弹准线性化模型，将导弹动力学描述为状态空间形式；采用函数替换方法将导弹的非线性动力学描述为关于特定时变参数的函数的线性组合形式；以整个设计区间内模型参数变化范围最小为优化目标，采用线性规划优化算法确定了所选网格点上的模型参数。

Analysis and comparison of the model results show that the introducing of gravity wave drag to the model can improve the model performance to some extent and result in more realistic simulation, and the effect of envelope orography on regional climate simulation is less significant than that of gravity wave drag.

通过试验结果的对比分析发现，在模式中引入地形重力波拖曳作用可在一定程度上改善模式对气候系统和要素的模拟效果，使模拟结果更符合气候实况。包络地形对模拟结果也有一定的改善，但对于细网格的区域气候模式来说，其效果不如重力波拖曳明显。

In the plant, bead appearance of ovule be been in becomes an envelope.

在植物，珠被在胚珠外形成一个封套。

The author discussed the effect of opacity on stellar evolution and concentrated on the mechanism of triggering blue loop by using Padova stellar model. It shows that extended mixing at the bottom of the convective envelope changed the interior hydrogen profile, which triggers or suppresses blue loop. Laboratory astrophysics, which is a cross subject of astrophysics and plasma physics, combines the demand of accurate data of radiative opacity with the latest advances in high intense lasers to devise the third independent method to study the radiative opacity. On the basis of the comparison between stellar material and laser-produced plasma in terrestrial laboratory, the desirable way to study opacity in laboratory and the brief introduction to the experiments relative to opacity are given.

本论文就开展辐射不透明度实验室研究的背景、内容和意义进行了介绍，并在对实验室的激光等离子体和天体环境下的恒星物质两者差异和相关性的认识基础上，论证了开展辐射不透明度实验室研究的可行性，而且对世界上正在开展的类似研究予以简要介绍，期望可以将天体物理领域对辐射不透明度数据可靠程度的质疑以及对其准确数值的广泛要求，与激光等离子体物理实验的最新进展相结合，推进辐射不透明度实验室研究，为辐射不透明度的研究开拓了继天文观测和理论计算的第三种独立的手段。

After formatting, go to the Printer page to choose printer options such as envelope orientation and shifting.

格式化之后，到打印机页选择打印机选项，例如信封方向和偏移。

After formatting, go to the Printer page (Figure 31) to choose printer options such as envelope orientation and shifting.

格式化之后，到打印机页（图31）选择打印机选项，例如信封方向和偏移。

I haven't any note paper, but this envelope will do for the time being.

我没有信纸了，但这个信封可暂时派上用场。

Just complete the enclosed certificate,put it into the pre-paid postage envelope,and you will receive your Peerless embossed paperweight within two weeks.

您只要填写随函附寄的表格，把它放入邮资预付的信封内，就可以在两周后收到一块刻有浮雕图案的绝好镇纸。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。