利用不变区域方法,证明了二氧化硫催化氧化管式反应器流向变换强制操作模型整体解的存在性和一致有界性。
The existence and uniform boundedness of the global solutions of the model for sulphur dioxide oxidation in a tubular reactor with periodic flow reversal are proved by the invariant domain method.
这些细菌生活在管虫体内;管虫为它们提供硫化氢和二氧化碳。
These bacteria that live inside the tube worms; the tube worms provide them with hydrogensulfide and carbon dioxide.
在金属氧化物半导体场效应晶体管(MOSFET)的作品在一个类似的原则,但二极管的MOSFET内掩埋。
The metal oxide semiconductor field effect transistor (MOSFET) works on a similar principle, but the diode is buried within the MOSFET.
但是研究者争辩说,如果把二氧化碳和水蒸气从纳米管薄膜端通入,在另一端收集甲烷燃料,整个处理过程可以变为连续性的。
But the researchers argue that their process could be made continuous if carbon dioxide and water vapour could be passed through the nanotube film and the methane fuel collected from the other side.
每克二氧化钛纳米管可以使这个装置大约每小时生成160毫升碳氢化学物。 这个反应速率至少要快于先前在紫外线下得到的结果20倍。
The devices generated roughly 160 microlitres of the hydrocarbons per hour per gram of their titania nanotubes, a rate at least 20 times higher than in previous studies done with ultraviolet light.
有研究者已利用一种纳米管催化剂,在光的作用下,把二氧化碳和水蒸汽转化为一系列的燃料,转化的速度比以往加快。
Researchers have used sunlight to convert carbon dioxide and water vapour into a range of fuels faster than ever before, thanks to a nanotube catalyst.
但是对于这个新的纳米管装置,需要不断向仪器内通入二氧化碳和水来维持反应的继续。
But with the new nanotube devices, the Chambers would have to be replenished with carbon dioxide and water from time to time to keep the reaction going.
列维和他的同事们用原子力显微镜和两片绝缘体(镧氧化铝和锶钛氧化物),研制出了一枚纳米晶体管。
Using an atomic force microscope and two layers of insulators (lanthanum aluminum oxide and strontium titanium oxide), Levy and his colleagues created a nanoscale transistor.
目前看多是用诸如锌、铜等金属的氧化物,但碳原料的微小管件也被开发出来。
At the moment oxides of metals such as zinc and copper seem to be the favourites, but tiny tubes made of carbon are also being explored.
Kamat博士及其团队的实验电池以硫化镉(cadmium sulphide)、氧化锌(zinc oxide)、氧化钛(titanium dioxide)为原材料,他们在电池的表面覆盖碳纳米管,使得表面突起的那些“管子”看似头发丝。
Dr Kamat and his team covered the surface of an experimental cell made of cadmium sulphide, zinc oxide and titanium dioxide with nanotubes, so that the tubes stuck up from the surface like hairs.
结果表明,采用真空热压后热轧工艺制备的碳纳米管铜基复合材料的致密度较高且能有效地防止被氧化。
SEM and XRD results show that the composite that is hot rolled after vacuum forming, has relatively high density and can avoid being oxidized effectively.
GAP公司的高管采用科技手段减少往来花费的创举,是这充斥着二氧化碳阴影中的一丝希望。
The silver lining in this carbon-filled cloud is that executives at firms such as Gap are using technology to cut the number of trips they make in order to save money.
碳纳米管在空气在的热氧化性由热重实验测定。
Thermal oxidation of carbon nanotubes in air was performed by thermogravimetric experiment.
过热器整体清洗时,应有防止垂直蛇形管产生汽塞、铁氧化物沉淀和奥氏体腐蚀的措施。
Measures should be taken to prevent the vertical snake tube from steam binding, iron oxide depositing, and austenite corrosion when superheater is cleaned.
这个系统包括两个送风机(其中一个备用)、空气管和氧化空气分布管。
The system consists of two air blowers (one of them as a common spare), air piping and grid distribution pipe.
他可以解释这样的事实:10伏特已经足够开通金属氧化物场效应晶体管的导电沟道。
It can be explained by the fact, that 10v is still high enough to fully open the MOSFETs channel.
复合管从里到外由氧化铝陶瓷层、金属过渡层、白口铸铁层、碳原子扩散层、球墨铸铁层组成。
From inner to outside, the composite pipe consisted of alumina ceramic layer, metal transition layer, white cast layer, carbon atom diffusion layer and nodular cast iron layer.
本文主要研究了一系列钛氧化物一维纳米结构(纳米管和纳米线)的制备及其电化学嵌锂性能。
The present study will focus on the preparation of a series of one-dimensional nanostructured titanium oxide and the electrochemical investigation of lithium intercalation properties.
通过对自由基反应原理和引发剂活性的阐述,结合高压聚乙烯管式法工艺,分析有机过氧化物引发剂在高压聚乙烯的选择应用。
The selection and application of organic peroxides initiators in LDPE production are discussed. The reaction of free radical and activity of the initiator are also described.
采用石英管反应器,在常压下研究了十氢萘和环己烷的气相氧化裂解(GOC)过程。
The gas phase oxidative cracking (GOC) processes of decalin and cyclohexane were investigated by using the quartz tube reactor at atmospheric pressure.
结果氢氧化钙封药后根管治疗期间急症的发生率最低,与传统药物相比,其差异有统计学意义。
Results A significant lower IAE frequency was recorded in calcium hydroxide group, when compared to those in CP and FC groups.
经高温燃烧管的水样受高温催化氧化,使在有机化合物和无机碳酸盐均转化为二氧化碳。
The high temperature combustion of the water by high-temperature catalytic oxidation, so that the organic compounds and inorganic carbonate were converted into carbon dioxide.
目前国内常用的激光器为氦氖激光器、二氧化碳激光器,适用于色素痣、寻常疣、汗管瘤、眼睑黄色瘤以及细小皱纹等。
Currently used as a helium-neon laser lasers, carbon dioxide laser for nevi, common warts, syringoma, eyelid xanthelasma, as well as small wrinkles and so on.
目的比较氢氧化钙和甲酚甲醛(FC)用于根管消毒的临床疗效。
Objective To compare the clinical curative effect of calcium hydroxide or FC in root canal disinfection.
目的探讨DMG光固化氢氧化钙修补前牙陈旧性根管穿孔的临床效果及可行性。
Objective To discuss the clinical effects and feasibility of repairing old root canal perforation of front teeth using DMG calcium hydroxide.
他们在二氧化钛奈米管中添加碳,将可吸收的光波长范围转换成可见光波段。
They have added carbon to titanium dioxide nanotubes to shift the wavelengths of light the tubes absorb to the visible portion of the spectrum.
目的观察采用三氧化矿物凝聚体(MTA)修补根管穿孔的短期临床效果。
Objective To observe short-term clinical effect of root perforation repair using mineral trioxide aggregate(MTA).
目的观察采用三氧化矿物凝聚体(MTA)修补根管穿孔的短期临床效果。
Objective To observe short-term clinical effect of root perforation repair using mineral trioxide aggregate(MTA).
应用推荐