| 词汇 | boron |
| 释义 | boron noun[ U ] uk /ˈbɔː.rɒn/ us /ˈbɔːr.ɑːn/(symbolB) a hard, yellow-brown chemical element used in nuclear reactors to absorb neutrons and in various compounds that are important in manufacturing硼（一种非金属化学元素，质硬，黄褐色，用于核反应堆中以吸收中子;其化合物在制造业中非常重要） Chemical elements actinium alkali metal americium astatine berkelium brimstone bromine calcium fluorine germanium lithium manganese nickel plutonium quicksilver selenium silicon sodium sulphur transition metal Experiments already made so that aluminum, silicon, boron, manganese, magnesium, sodium and potassium can be reduced from their oxides with ease. The element boron seems to have almost as marked an effect upon copper as carbon does upon iron. Well, couldn't we drive boron rods into the mass and slow down the reaction? asked Tom. Examples of boronboron Thirty-five holes are drilled into the board in a grid pattern; each hole has a nickel-plated neodymium iron boron disc inserted into it. Typically, for a p-n junction, phosphorus atoms are implanted on one side of an interface and boron atoms are implanted on the other. Mineral imbalances like boron, iron, and salinity and sodicity, though localized, do cause substantial yield loss. Species variability in boron requirement is correlated with cell wall pectin. Dry matter production and boron concentrations of vegetative and reproductive tissues of canola and sunflower plants grown in nutrient solution. Here we present our studies on harmonic generation from boron ablation, irradiated by a femtosecond pulse. The developmental stage during which boron limitation causes sterility in wheat genotypes and the recovery of fertility. The main pulse was focused onto the position 0.1 mm above boron target. An injection causes a boron compound to accumulate in the tumour. Enhancement of 24.77-nm line emitted by the plasma of boron nitride capillary discharge irradiated by a high-intensity ultrashort laser pulse. Boron-doped diamond is the inert material that sets new standards in electrochemical treatment. Opacity measurements of a radiatively heated boron sample. Figure 4 shows the intensity trace of high order harmonic generation from boron laser plasma. A silicon atom has four electrons in the valence band; phosphorus has five such electrons, and boron three. However, their range capability was far below that of the boron 0polyimide concept. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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