查询词典 Natural Selection

According to fire control standard,it introduces water supply for fire control of commercial building from selection of fire pump、 fire cock 、collocation of spraying systematical water pump and selection of fire rolling screen,which to perfect design of fire control.

按照现行消防规范要求，结合设计经验，从消防水泵的选用、消火栓、喷淋系统水泵的设置、防火卷帘的选用等方面介绍了商业建筑消防给水设计的几点看法，以使消防设计更加完善合理、灭火有效。

The thesis focuses on the circuit design and parameter selection, including the power circuit, control circuit and drive circuit of the front-end converter. Apart from that, for the load-end converter, the design and critical components selection of the traditional full-wave rectification and synchronous rectification are presented.

本文设计和确定电路的各种参数，包括前端变换器的功率电路、控制电路和驱动电路，对于负载变换器则给出了普通全波整流和同步整流的滤波器设计和一些关键器件的选择。

Selection and design of the lamp should form a specific combination of space, according to the function space requirements for selection and design.

灯具的选择与设计应该与具体的空间形式相结合，根据空间的功能要求来进行选择与设计。

First, the condition for electric-field intensity calculation with Gauss theorem and selection method for Gauss section; Second, condition for magnetic field with magnetic field loop law and selection method for loop.

本文要讨论两个问题：1 运用电场高斯定律求场强的条件和高斯面选取的方法；2 运用磁场环路定律求磁场H的条件和环路选取的方法，并通过举例说明它们的具体分析办

The design subjects include the selection and distribution of gear wheel, the design of spindle, and the guiding equipment and selection of the multiple spindle heads, etc.

因此本设计的重点是多轴箱的设计，设计内容包括齿轮分布与选用、轴的设计、多轴箱的选用、导向装置设计等。

In the selection field, this paper analyzed the government's selection to enterprises, as well as the enterprises and farmers'mutual choice.

在项目选择方面，分析了政府对企业的选择以及企业与农户之间的相互选择。

We need more selection, you can by using the Select tool from the selected file, functioningas come up with a select gridlines, and then hold down the ALT key "", when the cursor turns into a corner with a small """-in " numbers (+ it would mean that a decrease in the selected range or pixel), in the first box inside pull-out the second box and hold down the Shift key "", when the cursor turns into a corner with a small big ""++"" letter, and then in the second box inside pull out a third option box, so that both can be used for multiple selection.

密技五：我们必给众层拔取时，可以不后用拔取东西选定文件洋的地区，拉制不入一个拔取虚框；然后按住"Alt"键，当光不本酿成一个右下角带一小"-"的"+"号时（这表现加少被拔取的地区或象素），在第一个框的本质拉不入第二个框；而后按住" Shift"键，当光不本酿成一个右下角带一小"+"的不小"+"号时，再在第二个框的本质拉不入第不一个拔取框，这样二者轮番搁置，不离可以进动众层拔取了。

So the distributing character of permafrost and ground ice have more significance for the route selection and position selection than other linear engineering.

本文主要在输电线路沿线冻土分布的基础上，重点对微地貌条件下冻土和厚层地下冰的分布发育规律进行了分析和研究。

Then this paper makes a deep analysis on the HWMP proposed in 802.11s, points out some defects in root selection and proactive tree generation and makes improvements as follows: it proposes a distributed root selection algorithm to improve the simple direct configuration of root in the draft; it also proposes a ETX-based proactive tree generation algorithm to improve the simple minimal spanning tree based on hop count in the draft.

接着本文选取802.11s草案中提出的HWMP协议进行了深入分析，指出了该协议在根节点选取算法和预先树生成算法中的不足，分别对其做出了改进：提出的分布式根节点选取算法对草案中简单的直接指定根节点做出了改进；提出的基于ETX路由权值的预先树生成算法对草案中简单的基于最小跳数的预先树生成算法做出了改进。

Whenever an inactive window is made key, the background selection, if any, becomes highlighted as a normal selection.

当非活动窗口成为活动窗口时，如果有后台选定的对象，则成为普通的选定对象。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。