埃米觉得她闻到了伊莎贝尔身上飘出的一丝极微弱的花香味香水的味道。Amy thought she caught the faintest drift of Isabel's flowery perfume.丝极在一些电子管中形成阴极的高电阻的金属丝或金属带.A high - resistance wire or ribbon forming the cathode in some thermionic tubes....
Petroleum engineers plan and manage the extraction of oil.石油工程师规划并管理石油的提炼。The purpose of oil refinery is to refine crude petroleum.炼油厂的主要工作是提炼原油.They refined crude oil into various petroleum products.他们将原油提炼成各种石油产品....