There are about 750,000 species of named insects and 85 % of these are holometabolous.已定名的昆虫约有750,000种,其中85%的昆虫都是完全变态的.Metamorphosis of an insect may be ametabolous hemimetabolous, or holometabolous. Neuroendocrine and e...
We are going to celebrate our granduncle's eightieth birthday.明天我们要给舅爷过八十大寿....his eightieth birthday celebrations.他80大寿的庆祝活动All our family came to our grandfather's eightieth birthday party.我们全家和所有的亲戚都来参加祖父的八十...
Homeopathic treatment is based on the "like cures like" principle.顺势疗法是基于“以毒攻毒”的原理。Some shops gave wrong or inadequate advice when dispensing homeopathic medicines.有些药店在配发顺势疗法的药物时给出了错误或不当的建议。Have you ever used a homeopat...
这共晶成分的熔化温度低于操作温度.This eutectic composition has a melting temperature lower than the operating temperature.对共晶硅形态的变化机理也作了初步探讨.The mechanism of this change also was researched preliminarily.本文设计了 Nb -Si基共晶自生复合材料的成分体系,并采用真空...