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- magnetically focused electron beam 磁性聚焦電子束
- He focused his binoculars on the bird. 他把雙筒遠鏡的焦點(diǎn)對準在那只鳥(niǎo)上。
- He focused his mind on his new plan. 他集中心思在新計劃上。
- His eyes focused slowly in the dark room. 他在那間黑屋子里眼睛慢慢地看清了東西。
- The camera is focused at infinity. 照相機的聚焦被調節在無(wú)限遠這一檔上。
- electromagnetic focus electron gun 電磁聚焦式電子槍
- The transmitter was pulsed by an electron tube. 電子管使發(fā)射器產(chǎn)生脈沖波。
- He focused the sun's ray on a piece of paper with a burning-glass. 他用一面凸透鏡把陽(yáng)光在紙上聚成焦點(diǎn)。
- The beams of light moved across the sky and focused on the plane. 光束在空中移動(dòng),集中對準飛機。
- An electron tube having a cathode and an anode. 電子二極管有一個(gè)陽(yáng)極和一個(gè)陰極的電子管
- She had a habit of shrinking up whenever attention was focused on her. 她有個(gè)習慣，每當人們的注意力集中到她身上時(shí)，她便會(huì )羞羞答答地畏縮不前。
- The scientist focused the telescope on the moon. 科學(xué)家把望遠鏡的焦點(diǎn)對準月亮。
- The number of electron pairs an atom can share with other atoms. 共用電子對數，共價(jià)一個(gè)原子與其他原子共用的電子的對數
- An electron with a negative charge, as contrasted with a positron. 電子帶有負電荷，與正電荷相反的電子
- They focused their attention on the main problems. 他們把注意力集中在主要問(wèn)題上。
- He had a tendency to shrink up whenever attention was focused on him. 當別人注意他時(shí)，他就會(huì )退縮一旁。
- A portable TV camera focused on him. 一臺便攜式電視攝影機的鏡頭對著(zhù)他。
- They serve as focused references on those subjects. 它們對有關(guān)專(zhuān)題提供一些有針對性的參考意見(jiàn)。
- To calm himself,he too focused on the view. 可現在，為了使自己平靜下來(lái)，他也專(zhuān)心一致地看著(zhù)眼前的景色。
- Attempts to split an electron always fail. 企圖分裂電子的嘗試總是失敗的。
