In there compounds, the cyclopentadiene ring has only four hydrogens.在这些化合物里, 环戊二烯环只有4个氢.Those that are aligned perpendicular to the plane are called axial hydrogens.与平面垂直定向的氢叫做直立氢.A methane molecule is composed of one c...
Dolphins have sometimes been known to save drowning swimmers.据悉海豚有时会救溺水的游泳者。Panic swept through the swimmers as they saw the shark approaching.游泳的人看见鲨鱼靠近时一片惊慌.The thundershower had temporarily scattered the swimmers.雷阵雨暂...
The terrain's high points provide a panoramic view of Los Angeles.在这个地区的制高点能够看到洛杉矶的全景。Frank Mariano negotiates the desert terrain in his battered pickup.弗兰克·马里亚诺驾驶他那辆破烂不堪的皮卡车成功穿越了沙漠地带。He had made a detailed study of...
He sniffed, fidgeting in discomfort, uneasy at the suggestion.他吸了吸鼻子，对这项提议感到窘迫不安，心烦意乱。There is an uneasy relationship between us and the politicians.我们和那些政治家之间的关系很不稳固。His triumph was overshadowed by an uneasy sense of fo...
Predictors have been constructed by modifying the Crank - Nicolson equation.预测式是利用修改克兰克-尼科尔森方程为构成的.The corrector is a modification of the Crank - Nicolson equation.校正式是克兰克 -尼科尔森 方程的修改式.The consolidation equations were di...