图钉

The solution is to use the box as a candleholder and fix it to the wall with the pins.

方法是用盒子做烛台，并把这个烛台用图钉固定到墙上）。

Theory and simulation results demonstrate that the ambiguity function of the Chebyshev chaotic modulated signals is really approximately thumbtack-shape as the ideal results, thus the signal has high resolution both in time-delay domain and Doppler frequency domain, and no matter what the codes length N is.

仿真结果表明2阶Chebyshev混沌二相码的模糊函数非常逼近理想的图钉形，具有良好的测距和测速精度，且所得结呆并不依赖于所选用码的长度变化。

I just sat on a drawing pin .

我刚坐到一个图钉。

She used drawing pin to pin the poster to the door .

她用图钉把广告钉在门上。

She sat down on the business end of a drawing pin .

她坐在图钉上。

Once the paint paste, Bingbing, smooth wall glue confused mess, and a summer there may be insects, with a drawing pin it on the wall of a hole to play another hole , really affect the appearance.

一旦把画贴上，糨糊，胶水弄得光洁的墙乱七八糟，而且一到夏天还有可能被虫蛀，用图钉吧，墙上打的一个洞又一个洞，真是影响美观。

I hammered a tack into the wall and hung a small picture from it.

我在墙上钉了一个图钉，然后在上面挂了一张小图片。

Methods Forty eight emergency cases of irregular shaped airway foreign bodies (plastic ball pen cap, mini toys, whistle, pin, thumbtack, milk tooth , pen, steel ball, stone of apricot, chicken bone and screw nail) from Jan.1998 to Nov.2000 have been reviewed, especially the operative procedure for removing foreign bodies.

回顾1998年1月～2000年11月北京儿童医院治疗的48例气管、支气管特殊异物(塑料笔帽、玩具、哨、大头针、图钉、乳牙、笔头、钢珠、杏核、鸡骨头、螺丝钉)的处理过程。

You just find yourself a nice chunk of some Misch metal from the Earth's substrate, then carefully extract any Neodymium, purify it, mold it, coat it in a small amount of nickel, and then wrap some plastic around it in the shape of a thumbtack.

你可以找到自己的一些米施金属从地球的基板好块，然后仔细提取任何钕，净化，塑造它，大衣它可以少量的镍，然后包在一个图钉形状周围的一些塑料。

Option 2 We can begin by cardigan spread out, placed on a flat thick paper board, then pull to the original size of the cardigan with a pushpin or tack fixation, followed by the use of steam irons to vacate way in a sweater at the top of steamed steaming, so that was fluffy cardigan-like, until the temperature cools after the clothes, then won the pushpin, so that the child can be brought into a cardigan to restore its original size.

办法2 我们可以先将羊毛衣摊开，放在平整的厚纸板上，再把羊毛衣拉至原来的大小，用图钉或大头钉固定，接著利用蒸气熨斗，以腾空的方式在毛衣上方蒸一蒸，使羊毛衣呈蓬松状，等到衣服的温度变凉后，再拿下图钉，这样子就可以使羊毛衣恢复成原来的大小了。

Compared the voltage negative feedback wire-feeding speed regulation system supported by current positive feedback with the rotational speed negative feedback regulation system, the equivalent condition of the two systems is obtained. Then, a wire-feeding speed regulation circuit for the CO_2 welding machine is designed based on TL494 chip, which has the self-protective function under the condition of current overloading.

通过对电压负反馈配合电流正反馈的送丝调速系统与转速负反馈调速系统的比较，得出了这两种调速系统的等效条件，并采用电压负反馈配合电流正反馈技术，设计了一种以TL494为核心的具有过电流截止保护功能的CO_2焊机送丝调速电路。

Make a model to help you determine the optimal number of tollbooths to deploy in a barrier-toll plaza.

建立一个模型来确定在一个容易造成阻塞的收费区中应该设置的收费亭的最优数量。