When change stacking pallet , it is with temporary stock device , operator has plenty time , it is not necessary to reduce machine speed or stop machine 更换堆叠栈板时，备有暂存装置，操作人员作业时间充裕，机器不必减速或停机。
Postal enterprises shall inform the customs of their business hours in advance , and the customs shall promptly send officials to supervise on - the - spot checking and examination 邮政企业应当将作业时间事先通知海关，海关应当按时派员到场监管查验。
Placed foundation ' s main function is decreasing load and working time , improving project quality and abbreviating time in the bridges whose condition is very bad 其主要目的是在施工条件恶劣的桥址处即可能地减少水上施工工作量和作业时间，提高工程质量并缩短工期。
Piling permits issued by region and operating hours note : piling permit is issued for a total duration of 3 hours , 5 hours or 12 hours each day 2002年按区域及操作时间签发的打桩工程许可证注：撞击式打桩工程的建筑噪音许可证订明准予作业时间，一般为每天3小时5小时或12小时。
Before implementing network planning , productive time of a working procedure is unknown . therefore , the paper presents two methods which judge the possibilityof a working procedure 在网络计划实施之前，工序作业时间是未知的，因此，本文提出二种判定工序实现可能性的方法。
Comparing this connection number with state sort table the grade of a working procedure ' s connection number is judged , then the possibility of this working procedure is got 并将这一联系数与态势排序表相对照，来判断工序作业时间的联系数所处的态势级，从而得出实现该工序的可能性。
Comprehensively analyze on - site equipments , tools and materials to see if any potential problem has existed , because any small problem can cause an accident or a delay of time of operation 全面分析现场作业设备、工具、材料存在的潜在问题，其中任何一个细节问题出现都有可能引发作业事故及延迟作业时间。
Enhance dispatching management , balance comprehensive production capacity scientifically , well arrange production , consume electricity and other energies economically , reduce product manufacturing cost , reduce production cost 强化调度管理。科学地平衡综合生产能力，合理安排生产作业时间，平衡用电，节约能源，节约产品制造费用，降低生产成本。
The research and test results show that single - direction mining and slope cutting in the middle of face may reduce workers ' labor , shorten the working looping time , fasten the working schedule and improve efficiency 研究和实测结果表明，在薄煤层工作面采用单向割煤、中部斜切进刀方式，不但降低了工人的劳动强度，而且减少了循环作业时间，提高了生产进度和效益。
Compared with manual method , it takes only five minutes to establish a schedule by means of the model . meanwhile , optimization of schedule can be a scheme that can save the time of process from smelting to continuous casting 利用炼钢连铸生产调度仿真时间petri网模型制定调度计划所需的时间为5分钟；优化调度计划可以提供一种缩短炼钢连铸工艺流程作业时间的方案。
