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- Gynecologic History: Last menstrual period length of regular cycle. 产科史：既往妊娠史，孕期及结局，早产，剖宫产
- The circadian periodogram calculated the period length of the rhythm of average woman. 月经周期可以影响静息-活动昼夜节律时相。
- However, the simulation results of the superlattice with 4% lattice mismatch show that the thermal conductivity increases monotonically with the period length. 而对于具有4%25晶格失配的超晶格模拟结果却表明，超晶格导热系数随周期长度的增大而单调上升。
- The dependence of superlattice thermal conductivity on period length is investigated by nonequilibrium molecular dynamics simulation. 摘要采用非平衡态分子动力学方法模拟了超晶格的法向导热系数随周期长度的变化关系。
- For perfectly lattice-matched superlattices, a minimum thermal conductivity is observed when the period length is of the order of the effective phonon mean free path. 模拟结果表明，在晶格匹配的超晶格中，当周期长度同声子平均自由程相当时，超晶格导热系数将出现最小值。
- The range of measurable optical wavelengths and resolvable wavelength interval are discussed with considering the period length of waveguide holographic grating and parameters of CCD detector. 讨论了波长测量范围和光谱分辨率。给出了在设计波导光栅、确定探测器时应该考虑的几个问题。对系统测量误差进行了分析。
- A calculation of period length for Chinese economic fluctuation 对中国经济波动周期长度的估算
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
- Which period of history are you studying? 你正在学哪一段历史？
- Can you tell me the time period when it was stolen? 能不能告诉我大概什么时候被偷的？
- Chaucer wrote in the late mediaeval period. 乔叟写作的时代是中世纪末。
- She'll be away for an indefinite period. 她将离开一段时间，何时回来未定。
- This was the most difficult period of his life. 这是他一生中最艰难的时期。
