1.
Experimental Research on Four Optical Cycle Pulse Generation in Ti:sapphire Laser;
四个光学周期脉冲钛宝石振荡器的实验研究
2.
The four-week program is designed for absolute beginner to advanced levels.
为期四周之「国波尔图葡萄牙语班」合于各个程度的葡萄牙语学习者。
3.
It was starlight, and very still.
这是个星光灿烂的夜晚，四周一片寂静。
4.
Literature Translated by Zou Zuoren in His Early Times and "May Fourth" Literature;
周作人早期翻译文学与“五四”文学
5.
All students should select their top four topic choices for a first presentation by order of preference before the end of the second week of the semester.
所有学生应在这学期第二周周末之前，根据偏好程度为第一份报告选择四个备选主题。
6.
country programming cycle, the fourth UNDP
开发署第四个国家方案拟订周期
7.
Cyclical nulll-drift and multimode coupling for a four frequency ring laser gyro
四频环形激光陀螺的周期性零漂与多模耦合
8.
Study on Photoperiodic Effect of Tetraselmis Tetrathele and Prorocentrum Donghaiense;
四列藻和东海原甲藻的光周期效应研究
9.
Administrative Professionals Week is always the last full week of April,
行政职员周通常是四月份的最后一个完整星期，
10.
Optical Bistability and Optical Limiting of Nonlinear Periodic Structure Media
非线性周期结构介质的光学双稳态和光限
11.
Chemo-sensor Based on Evanescent Wave of Long Period Fiber Grating
基于消失波的长周期光纤光栅化学传感
12.
In reverse, I will be staying at home for a week in Labor Day holiday. I will enjoy it with no exam to worry about. I should be happy.
已经是在学校的第三周，而且还有另外两个星期。从没有这么长时间没回家，为了专四只能如此。
13.
Table3 shows the change in the chemical composition of the process solution after10 vol.% of hydrazine is added at the end of the fourth cycle.
表3显示在第四个周期的最后，加入容积百分之10的氮化物，则其过程溶液中的化学成份会改变。
14.
In this picture, among many large commercial buildings, a college graduate is climbing upward with difficulty.
在这幅图中，四周都是高耸的商业建筑，一个大学毕业生正在期间艰难的向上攀爬。
15.
A unit of time corresponding approximately to one cycle of the moon's phases, or about30 days or4 weeks.
月大约和月亮盈亏的一个周期相当的时间单位，或约三十天或四周
16.
Generation of Red and Blue Laser from Green Pump Laser in Quasi-Periodic Optical Superlattice
绿光抽运准周期光学超晶格产生红光与蓝光的研究
17.
Human, Human Individuality, Literature--The Early View of Literature of Zhou Zuoren
人·个性·文学——论周作人早期的文学观
18.
Glory of Geology--Celebrating the 120th Birth Anniversary of Li Siguang,an Brilliant Geologist
地质之光——纪念卓越的地质学家李四光诞辰120周年