图钉

He put thumbtacks on the teacher's chair.He threw spitballs across the classroom.He set off firecrackers in the lavatory and spread glue on the doorknobs.

他在老师的椅子上放图钉，在教室里扔纸团，在厕所里放鞭炮，还在门把上沫胶水。

Production of various types of "Baisheng card" staple, back-type needles, pins, thumbtacks, paper clips, flat, etc..

生产各种类型&百胜牌&订书钉、回型针、大头针、图钉、曲别针、扁丝等。

Companies providing high-quality aluminum frame cork board and an aluminum framed OA cloth bulletin board, you can use cork screw, thumb tack, pin binding of documents, notices, notes, etc. guestbook, OA cloth can be selected based on customer requirements in different colors.

公司提供高质量的铝框水松板及铝框OA布公布栏，可使用软木钉、图钉、大头针装订文件、告示、便条留言等，OA布可依据客户要求选用不同颜色。

A letter opener and a box of thumb tacks ?

和一盒图钉来阻止它？

Tack the carpet to the floorboards.

用图钉把地毯固定在地板上。

This studded leather hat is too trendy.

这个有图钉式样的皮帽流行性太强了。

The research results found that due to the energy characteristic of the hybrid welding, the lap welding joint of magnesium alloy appeared "pin shapes " and the microstructure characteristics can be divided into two parts: The top of bead was the zone acted by laser and TIG together, while the bottom of bead was acted by laser alone.

研究发现：复合热源搭接的能量特点导致接头宏观呈&图钉&形状，复合热源搭接焊的热循环特点导致了接头微观组织的特殊性：接头上部呈现激光焊与TIG焊共同作用下的组织特征；接头下部呈现明显的激光焊组织特征。

The folder also features ambidextrous thumb studs, a false top edge, the signature Duncan bearing pivot.

文件夹也以两手俱利的拇指图钉为特色，错误的顶端边缘，签字邓肯举止依枢轴转动。

As the larger manufacturer in terms of production scale of the same fields, the company is major in the production and sale of sationery, garment accessory, plastic, hardware and needle products of high quality, which is formed into a series of map pins, pearlized plastic head pins, magnet button, shirt pins, steel pins, hundreds of products.

本公司主要生产、销售文教用品、服饰用品、塑料、五金用品、针制品，形成图钉、珠光针、磁石、衬衫针、大头针五大系列，百余种产品。产品品质精良，是中国国内同行业中生产规模较大的生产厂商。

All 62 were tacked4 on the wall behind her bed.

她攒了一套自己做的纸娃娃，一共62个，都用图钉钉在床后的墙上。

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。