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thumbtack 〔美國〕=thumb pin.

thump

Fsk / psk radar signal is the signal with both fsk and psk modulation at one time . it is with large bandwidth time product ( bt ) , thumbtack - like ambiguity function and well ability of anti - emi . the fsk / psk signals of which the frequency - hopping and bi - phase sequences were randomly chosen often have high sidelobe level Fsk / psk信號是同時進行頻移鍵控( fsk )和相移鍵控( psk )調制的信號,該信號具有大時帶寬積( bt )和高分辨特性,并具有“圖釘型”模糊圖結構、低截獲概率( lpi )特性和較好的抗干擾能力,受到了廣泛的重視。

The results show that the cps signals have the thumbtack - typed ambiguity , no distance and / or speed ambiguity and excellent speed / distance measuring performances . 3 . we analyze anti - interference performances of the uniform ppm - ps radar signals and the random ppm - ps radar signals , and make the comparison between them 研究結果表明隨機脈位調制與隨機二相碼調相復合脈沖串信號具有“圖釘型”的模糊函數,不存在距離速度模糊,具有良好的測距測速性能。

But it is now much more common for hypnotists simply to ask a subject to stare at a small , stationary object ? such as a colored thumbtack on the wall ? during the “ induction patter , ” which usually consists of soothing words about relaxation and suggestions to concentrate 不過,現在的催眠師多半只要求人們盯著一個小而且固定不動的目標,例如墻上一枚有顏色的圖釘,同時實施語言誘導,通常是利用安撫性的字句讓人放松及專心。

“ yes , i know , “ said mr . kangaroo . “ i enjoy putting thumbtacks in chairs . “是的,我知道。 ”袋鼠先生說, “我喜歡把圖釘放在椅子上。 ”

“ ouch ! “ cried the principal . “ there is a thumbtack in this chair . “哎喲, ”校長叫道, “這把椅子上有顆圖釘。 ”

- he puts thumbtacks on my stool . - you saw him do this -他在我的椅子上放圖釘-你看見是他干的?

He puts thumbtacks on my stool . - you saw him do this 他在我的椅子上放圖釘-你看見是他干的?

One thumbtack popped all eight of my back tires 一個大頭正扎進我后面的所有八個輪胎里面

“ sprinkle thumbtacks on your bedroom floor “撒些圖釘在你的臥室地板上。 ”

Who would gladly swim across an ocean of thumbtacks 他們很樂意游過荊棘密布的海洋