The terpolymerization of propylene oxide ( po ) and cyclohexene oxide ( cho ) with carbon dioxide ( co2 ) was investigated 報道了三元共聚物聚甲基乙撐環(huán)己撐碳酸酯的制備與性能研究。
Carbon dioxide ( co2 ) combines with water to form carbonic acid ( h2co3 ) , the same weak acid found in carbonated beverages 二氧化碳( co2 )和水結(jié)合,形成碳酸( h2co3 ) ,這種弱酸也可以在碳酸飲料里找到。
Another obvious candidate was carbon dioxide ( co2 ) , one of the primary gases spewing from the volcanoes abundant at that time 另一個當然候選者則是二氧化碳( co2 ) ,它是當時活躍的火山活動所噴出的主要氣體之一。
The pvc tube is hazardous for carbon dioxide ( co2 ) laser surgery if it is not well wrapped with metallized foil tape 在雷射手術(shù)當中,如果氣管幾管用金屬鋁箔紙包覆的不完備的話,尤一管子被雷霆央求我束打到,造成起火燃燒的機會還是很大。
Interestingly , these two issues are highly related , because energy consumption usually produces carbon dioxide ( co2 ) which is the major cause of climate change 有趣的是這兩項課題具有高度的相關(guān)性,因為能源消耗通常會產(chǎn)生二氧化碳,而二氧化碳則是引起氣候變遷的主因。
Recent observations made with themis instrument onboard nasa ' s mars odyssey , currently orbiting mars , found the spots to be as cold as the carbon dioxide ( co2 ) ice beneath them 正在探索火星的火星奧德賽號探測船,最近用搭載的themis相機進行的觀測,發(fā)現(xiàn)這些暗斑和它下方的乾冰一樣冷。
Today the world ' s coal , oil and natural gas industries dig up and pump out about seven billion tons of carbon a year , and society burns nearly all of it , releasing carbon dioxide ( co2 ) 今天,全球的煤、石油及天然氣產(chǎn)業(yè),一年挖掘及抽出大約70億噸的碳,而社會大眾幾乎將它們?nèi)繜?,釋放出二氧化碳?
Unless humanity takes prompt action to strictly limit the amount of carbon dioxide ( co2 ) released into the atmosphere when consuming coal to make electricity , we have little chance of gaining control over global warming 除非人們立刻采取行動,嚴格限制燃煤發(fā)電時釋放到大氣的二氧化碳排放量,否則我們不太可能控制得了全球暖化的狀況。
In this paper , we employ the plasma enhanced chemical vapor deposition ( pecvd ) to prepare high quality zno thin film at low temperature using a zinc organic source ( zn ( c2h5 ) 2 ) and carbon dioxide ( co2 ) gas mixtures . the effect of the substrate temperature and annealing temperature on the quality of zno thin films was studied in detail 為了在低溫下制備高質(zhì)量的氧化鋅薄膜,我們采用金屬有機源和二氧化碳氣源,首次利用等離子體增強化學(xué)氣相沉積的技術(shù)在低溫下制備了高質(zhì)量的氧化鋅薄膜,確定了生長高質(zhì)量氧化鋅薄膜的優(yōu)化條件;研究了不同的襯底溫度和退火溫度對氧化鋅納米薄膜質(zhì)量的影響。
In order to otain high quality zno thin films , we , for the first time , employ the plasma enhanced chemical vapor deposition ( pecvd ) to prepare high quality zno thin film at low temperature using a zinc organic source ( zn ( c2h5 ) 2 ) and carbon dioxide ( co2 ) gas mixtures . the effects of the growing condiction and the native oxide layer of si substrate on the quality of zno thin films was studied in detail . to prepare p - zno and overcome the dufficulty of reverse due to the interaction between the n atomic , we obtain high qulaity p - zno by a easy way of thermal zn3n2 為了在低溫下制備高質(zhì)量的氧化鋅薄膜,我們采用金屬有機源和二氧化碳氣源,首次利用等離子體增強化學(xué)氣相沉積的技術(shù)在低溫下制備了高質(zhì)量的氧化鋅薄膜,系統(tǒng)地研究了生長條件以及襯底表面氧化層對薄膜質(zhì)量的影響,確定了生長高質(zhì)量氧化鋅薄膜的優(yōu)化條件;為獲得p - zno材料,克服在zno中摻n雜質(zhì)間相互作用影響摻雜效率不易獲得p - zno的困難,我們通過熱氧化zn3n2的方法制備了p - zno ,獲得了一系列研究結(jié)果: 1 、詳細研究了氣體流速比,襯底溫度和射頻功率實驗參數(shù)對氧化鋅薄膜特性的影響。