这家猎头公司凭其出色的表现,成为值得信赖的合作伙伴.This headhunting company became a confidential partner due to their excellent performance.如果以酬金形式付酬,则该企业可能会同时与好几家猎头公司联系.A business may use several headhunters if compensation is on contingency b...
方法: 用溴代及胺化反应合成了四甲基吡嗪衍生物.METHODS: The target compound was prepared by the bromination and amination reaction.论述了三丙酮胺纯度对加氢和还原胺化反应的影响.The effects of triacetoneamine concentration on hydrogenation and amination were discusse...