氧气诱导法提高ECD对HCFC -141b 的灵敏度(英文)Improvement of the ECD Response to HCFC 141 b by O 2 Induced Measurement ?齿面诱导法曲率和滑动系数的改变是重要的影响因素.Changes of induced normal curvature and the relative sliding coefficient of gears are the im...
"I think I've covered that business more than adequately," he said gravely.“我想我已经把那件事说得够详细了，”他正色说道。"Its rarity value is high," Gibson announced gravely.“它极为稀罕，”吉布森严肃地宣布。Her mother was gravely ill.她母亲病得很重....
Antihistamines are the medications most commonly used to diminish allergic symptoms.抗组胺药是药物最常用的,以减少过敏症状.Cough suppressants and some antihistamines may help quiet an annoying cough.镇咳药和一些抗组织胺类药物能帮助驱除烦人的咳嗽.In the past, par...
He appealed to his countrymen not to lose heart.他呼吁自己的同胞不要丧失信心。I'll never lose heart even if I should fail ten times.即使失败10次,我也不灰心.Don't lose heart, all will turn out well.不要失去勇气, 一切会好起来....