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- CH4和C2H4CH4 and C2 H6
- 表面金屬Cu位是CO2和C2H4的共同吸附位，導致二者之間存在一定的競爭吸附；There exist competitive adsorption between CO2 and C2H4 on Cu.
- CH4和CO2重整CH4 and CO2 reforming reaction
- 用CH4和N，為載氣的SiCl4作原料，用H2為稀釋氣，在兩種氣體混合比和三種溫度下化學(xué)氣相沉積SiC涂層。CH4 and SiCl4 are used as raw material,N,as carrying gas for SiCl4 and H2 as dilution gas. CVD SiC coating is prepared with two kinds of ratio and three kinds of temperature.
- CH4和N2OCH4 and N2O
- CH4和CO2排放CH4 and CO2 emission
- C2H4吸附adsorption of ethylene
- （道德方面）促進(jìn)，提高，社會(huì )進(jìn)步提高社會(huì )，道德和智力標準的努力或運動(dòng)An effort or a movement to improve social, moral, or intellectual standards.
- C2H4氣體C2H4 gas
- 全面實(shí)施以德育為核心、以創(chuàng )新精神和實(shí)踐能力為重點(diǎn)的素質(zhì)教育Carry on the quality education centering on moral education and emphasizing creativity and practice
- 本文采用電子回旋共振微波等離子體化學(xué)氣相沉積方法(ECR-CVD),以CH4和H2為氣源、Fe3O4納米粒子為催化劑,未加電場(chǎng)情況下,在多孔硅基底上制備出大面積陣列碳納米管。The large area well-aligned carbon nanotube (CNT) arrays were synthesized on porous silicon by electron cyclotron resonance chemical vapor deposition (ECR-CVD) with CH4 and H2 as the source gases, Fe3O4 nanoparticle as the catalyst and without applying electrical field.
- 讓溫馨的祝愿、幸福的思念和友好的祝福，在圣誕佳節來(lái)到你身邊，伴你左右。May the warmest wishes, happy thoughts and friendly greetings come at Christmas and stay with you all the year through.
- 多讀和多說(shuō)英語(yǔ)，英語(yǔ)能力就會(huì )培養起來(lái)。English skills will accrue to you from speaking and reading a lot.
- 乙烯：是一種氣態(tài)的碳氫化合物(C2H4)，許多植物都可產(chǎn)生。Ethylene (ethane) A gaseous hydrocarbon (C2H4), produced in varying amounts by many plants, that functions as a plant HORMONE.
- 介紹了經(jīng)過(guò)改裝并配有火焰離子檢測器 (FID)和電子捕獲檢測器 (ECD) ,能同步分析稻田CO2 、CH4和N2 O排放通量的氣相色譜儀Agilent 4 890D的基本原理、主要配置及性能。The system for measuring CO 2,CH 4 and N 2O emissions consists of static sampling chambers,a modified Gas Chromatography(GC/Agilent 4890D)and an Agilent Chemstation. The modified GC with two detectors of FID and ECD was used to simultaneously detect the concentrations of CO 2,CH 4 and N 2O. Working principle,configuration and characteristic of the modified GC were presented.
- [諺]只有傻瓜和騙子才同別人打賭。None but fools and knaves lay wagers.
- 以CF4,CH4和N2為源氣體,采用射頻等離子體增強化學(xué)氣相沉積法,在不同射頻功率下制備了含氮氟化類(lèi)金剛石薄膜樣品.Nitrogen doped fluorinated diamond-like carbon(FN-DLC)thin films is deposited using radio frequency plasma enhanced chemical vapor deposition under different radio-frequency power with CF_4,CH_4 and N_2 as source gases.
- 大氣CH4atmospheric CH4
- 他們的語(yǔ)言能力和語(yǔ)言學(xué)知識必須得到提高。And their language and linguistic competence should be improved.
- CH4氧化methane oxidation
