positive emission 中文意思是什麼
positive emission
解釋
陽離子發射-
We have shown that it is possible to create a radioactivity characterized by the emission of positive or negative electrons in boron and magnesium, by bombardment with alpha rays
我們已經展示了人工放射現象的可能性，這種放射現象的特徵是用以射線轟擊用咄硼和鎂中的正電子或負電子。 -
All automobile engines now built are equipped with the positive-crankcase ventilation system of crankcase emission control.
所有現代製造的汽車發動機，都需要裝備控制曲軸箱有害污染的曲軸箱強制通風系統。 -
The local transportation commission is making a plan for parking in the town. parking charges will not give positive incentives to users of private cars. vehicles will be subject to euro - iii gas emission standard this year in beijing
金公司這次能在獨聯體市場佔有一席之地意義深遠，而公司前期也取得vca認證得以進入歐洲共同市場，透過這些努力，未來大金肯定能為中國客車產業爭光。 -
The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material
本文的主要工作和結論如下：在人工氣候室內，根據不同覆冰絕緣子正、負極性下的閃絡試驗結果，得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓；正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應；覆冰較少時，合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法，對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明，直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低，且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。 -
It was at the beginning of 1934, while working on the emission of these positive electrons that we noticed a fundamental difference between that transmutation and all the others so far produced ; all the reactions of nuclear chemistry induced were instantaneous phenomena, explosions
到1934年初，我們在研究這些正電子排斥現象時才注意到，在蛻變和當時產生所有其他反應之間存在著一種根本性區別：所有被誘導的核化學反應都是瞬時現象，即爆炸現象。 -
The correlation coefficients between soil moisture regime and soil n2o emission rate were positive in the lower soil moisture regime ( 8 to 58 percent wfps ), and soil n2o emission rate turned weaker and weaker when above the field moisture capacity ( 106 percent wfps ). the highest n2o emission rate occurred in the field moisture capacity. soil n2o emission rate was higher in 30 than in 10 in the lower soil moisture regime ( 8 to 58 percent wfps ), however, the trend was reverse when above the field moisture capacity ( 106 percent wfps )
5水分含量低時（ 8 58 wfps ） ，土壤中n20釋放速率與土壤濕度呈正相關，並且隨著溫度升高釋放速率增大；土壤濕度接近田間持水量（ 58 wfps ）時，釋放速率最大；超過田間持水量（ 106 wfps ）時， n _ 2o釋放速率顯著降低，且30時的釋放速率小於10時的速率。 -
Here, therefore, we have a true radioactivity which is made evident by the emission of positive electrons
我們因此獲得了一種通過排斥正電子表現出來的真正的放射現象。
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