Don't reckon upon your relatives to help you out of trouble.不要指望你的親戚會幫助你擺脫困境.We reckon to arrive in Delhi at noon.我們估計正午抵達德里." I reckon so,'said Huckleberry; anyways, I'm suited.“ 我猜是這樣, ”哈克貝利說, “不管怎樣講, 我挺...
Four nozzles , canted outboard, split the exhaust of the solid rocket motor into four equal tails.四個向外傾斜的噴管把固體火箭發動機的排氣流分成四個相等的尾巴.In practice, the turbine disc and the nozzles are fitted into a casing.實際上, 渦輪圓盤和噴嘴是裝在機殼里的....
The progresses in the synthesis study of isoamyl isovalerate at home and abroad were reviewed.綜述了國內外對異戊酸異戊酯的合成研究的進展情況.Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸氫鉀為催化劑,正丁酸和異戊醇為原料合成了正...