Over 100 burglaries are reported every month, and that's just the tip of the iceberg.每月报案的入室盗窃案超过百起, 而这只不过是冰山一角.Unless we're all a lot more careful, the people who have died so far will be just the tip of the i...
经济学家们可自由创建理论，公司总裁们则关心现实情况。While economists are free to theorise, company chairmen are concerned with actualities.向导程序和模板可以帮助你创建手册、日历和网页。Wizards and templates can help you create brochures, calendars, and Web pages.在梅林的建议...
The method was established for purification of diflubenzuron by crystal technique with mixed solvents.本文论述了利用混合溶剂——结晶法提纯除虫脲的分析技术.The separation and determination of the primary impurities of diflubenzuron by liquid chrom...