临近排卵期，雌激素的分泌量随之增加。As ovulation gets nearer, oestrogen levels rise.雌激素是一种雌性荷尔蒙。Oestrogen is a female sex hormone.所有的性激素, 例如雌激素 、 黄体酮和睾酮都是类固酮.All the sex hoymones, e . g. estrogens, progesterone, and testosterone, are ster...
导线的两端联接到裂环整流器.The two ends of the wire are connected to a split - ring commutator.同步 低频 整流器与推挽整流器相似.The synchronized low - frequency rectifier is similar to a push - pull rectifier.低谐波 、 高功率因数 、 带有滤波器件的整流器.Low harmonics,...
Chinese ground crewmen ready two Republic P - 43 Lancer fighters of the Chinese Air Force.中国地面机组人员在为两架中国空军共和号P-43Lancer飞机做准备工作.Crewmen aboard the tanker sighted a ship in distress off the coast of Senegal.油船上的船员们在塞内加尔的近海...
Families have their problems and jealousies, but blood is thicker than water.家家有本难念的经，也都难免互生嫉妒，但总归血浓于水。They were divided by mutual suspicion and jealousies.他们因为相互猜疑嫉妒而不和.I am tired of all these jealousies and quarrels.我厌...
Objective : To discuss the therapeutic methods of adenoid hypertrophy in adults.目的探讨成人腺样体肥大的治疗方法.Generations of adults and children have delighted in the story.一代又一代的成年人和儿童都很喜欢这个故事。While the adults doze, the young play.大...