concession n period 持有特许权的期间
permian n period 二迭纪
repetition n period 重复周期
n Period lot-sizing procedures 周期性批量大小程序
n-period n周期
return n period 重现期
Design n Period 设计年限
Besides, we discussed the effects of different fertilization period on the principles of Urea-N transformation and transport under drip-irrigation in this paper.
并初步讨论了滴灌条件下不同灌溉施肥时段对尿素转化运移规律的影响。
Objective To determine the optical dose of nicardipine(N) for the hemodynamic stability and less cardiovascular stress response during the pre - postintubation period.
目的为在气管插管时减轻心血管应激反应和维持血流动力学稳定,选出尼卡地平的理想剂量。
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