They were principally used to catalyze aldol, allylation, Diels - Alder, ene and Friedel - Crafts reactions. 它们主要被用来催化Aldol, 烯丙基化, Diels-Alder, Ene和 Friedel -Crafts等反应.
病人呼吸困难, 心动过数及发绀.The patient has dyspnea, tachycardia, and cyanosis.四肢无杵状指, 发绀或水肿.His extremities do not exhibit any clubbing, cyanosis, or edema.再观察他的皮肤, 无黄疸和发绀.Clinton's skin, you cannot see any jaundice or cyanosi...
Lambert gave Luckwell a hefty shove to send him on his way.兰伯特用力推了勒克韦尔一把，把他送上了路。When push comes to shove, you are on your own.如果形势糟糕，你就只能靠自己了。She gave Gracie a shove towards the house.她猛地将格蕾西朝房子那边推了一把。...
She suddenly wipes her hands briskly on a towel.她突然抓起一块毛巾擦干了手.He wiped off the remains of the lather with a towel.他用毛巾抹去余下的皂沫。Fix the down bath towel shelf on the base with the M 5 inner hexangular set screw.将下主体用M5的内六角紧...
The oven burners reignite automatically if blown out.烤炉的火如果吹灭了会自动再点燃。Some stoves are oil burners; others are gas burners.有些炉子是烧油的, 有些是烧瓦斯的.The gas stove has only two burners.这瓦斯炉只有两个瓦斯头....