Take this perspective : your end users might occupy a plurality of their " contact hours " with your program viewing its error messages. 想象一下:最终客户可能会把同程序“接触时间(CH)”的大部分都消耗在查看程序所显示的错误消息上。
When the material-cells direct contact for 48 hours, the cell growth rate, was evaluated at 2 hours and 4 days after removing samples. Meanwhile, the morphological observations ( microscope and SEM ) and quantitative anslysis of extract metal ions were taken. 将金属材料与细胞直接接触48小时,于去除后2小时和4天评定细胞增殖率,并作形态学观察(倒置显微镜和扫描电镜)和溶出金属离子的定量分析。
Try not to contact them after work hours unless it's asked of you 除非有要求,不然不要在下班时间联系对方
Sideswipe surveyed the area, until we lost contact with him four Earth hours ago. 侧击调查的地区,直到在地球时间四小时前,我们与他失去了联系。
The school likes to have a contact number for parents during school hours. 学校想要学生在校时间和家长联系的电话号码。