The reaction kinetics of positronium o-Ps on MoNi/Al2O3 hydrotreating catalyst was studied by using the positron annihilation spectroscopy for chemical analysis(PASCA).
采用化學(xué)分析正電子湮沒(méi)譜(PASCA)技術(shù)研究正電子素(o-Ps)在MoNi/Al2O3加氫催化劑上的反應(yīng)動(dòng)力學(xué)。
Medical cyclotron supplies the positron isotope for PET examinations.
提出了要想做好醫(yī)用回旋加速器的質(zhì)量控制,保證回旋加速器良好穩(wěn)定的運(yùn)行,提供足額且符合要求的正電子核素,就要做好回旋加速器的維護(hù)保養(yǎng)工作,同時(shí),要注重技術(shù)人員的操作培訓(xùn)和質(zhì)控意識(shí)養(yǎng)成,并將維修和備件的供應(yīng)列入回旋加速器的質(zhì)控項(xiàng)目。
A short - lived association of an electron and a positron bound together in a configuration resembling the hydrogen atom.
電子偶素，正電子素電子與正電子的短暫結(jié)合物，兩者的結(jié)合物與氫原子的結(jié)構(gòu)十分相似
The Microstructions of Allotropic Carbon Materials Studied by Positiron Annihilation Techniques;
碳同素異構(gòu)體微觀結(jié)構(gòu)的正電子研究
Basic Research of Positron Radionuclide Labelled RGD Peptides;
正電子核素標(biāo)記RGD肽的基礎(chǔ)研究
If the spins are in the same direction, the state is called orthopositronium; if they are opposite, we speak of parapositronium.
若方向相同，則稱(chēng)該自旋態(tài)的電子偶素為正電子偶素；若方向相反，則稱(chēng)為仲電子偶素。
proton electron positron storage ring
質(zhì)子 電子 正電子貯存環(huán)
proton electron positron colliding beams
質(zhì)子 電子 正電子碰撞束
The electrons must then be deflected to hit the correct pixels.
（在新方法中）電子必須偏轉(zhuǎn)以擊中正確的像素。
The positron is an antielectron.
正電子就是反電子。
electron positron pair creation
電子 正電子對(duì)產(chǎn)生
electron pair creation
電子 正電子偶形成
electron-positron interaction
電子－正電子相互作用
electron positron pair annihilatio
電子 正電子對(duì)湮沒(méi)
large electron positron storage ring
大型電子正電子對(duì)撞機(jī)
Calculation of positron lifetime of single crystals of elements of the periodic table with the theory of local density approximation
元素周期表中元素單晶基于局域密度理論的正電子壽命計(jì)算
A positively charged electrode, as of an electrolytic cell, a storage battery, or an electron tube.
陽(yáng)極，正極電解電池、蓄電池或電子管的正電電極
An electron with a negative charge, as contrasted with a positron.
電子帶有負(fù)電荷，與正電荷相反的電子
Electrical and Electronics Calibration Laboratory
電氣及電子校正實(shí)驗(yàn)所
power-factor correction capacitor
功率因素矯正電容器