'氰'.''基一种单价基因,''.'氯'. ''化苯乙酮, 存在于简单的和复杂的氰化物中.A univalent radical , CN, found in simple and complex cyanide compounds.降低反应温度,提高了苯乙酮的收率.Thus , this reduced temperature of r...
The agency placed about 200 secretaries per annum.该代理机构每年大约安排200份秘书工作.Many personnel managers started as secretaries or personnel assistants and worked their way up.很多人事经理最初是从秘书或人事助理做起，然后慢慢升上去的。He castigated the secretar...