The letters adapt and get selected for their suitability to English; rarely is there an attack of the "Q" or "Z" letters.
字母的适应和选择取决它们对英文的适宜程度；很少会出现字母“Q”或“Z”。
We want to know whether a given vector field with components P, Q and R can be written as f sub x, f sub y and f sub z for a same function f.
要看向量场,能否写成，其中f是同一个函数。
Xu M. -z., Luo L. -s., Li Y., Wu Y. -q., Jiang X. -h., Xu J. -s. Intravascular ultrasound versus coronary angiography in coronary artery stent implantation.
许美珍，罗来树，李颐，吴延庆，姜醒华，徐劲松血管内超声与冠状动脉造影在冠状动脉支架置入中的应用比较。
The theory of folded cavity is discussed. The stable condition of Z-shaped cavity A-O Q-switched system is analyzed by transmitted matrix.
运用矩阵光学的传输矩阵理论分析了Z型折叠腔声光调Q系统稳定运行的条件。
Wang Z P. Li Q B. Tan Q Novel method for the measurement of the retardance of a quarter-wave plate.
王政平。李庆波。欧阳春梅延迟片法测量光学玻璃电流传感头线性双折射。
The basic principle and hypothesis are analyzed on the Z D and Q D combustion models of the diesel engine.
分析了柴油机零维、准维燃烧模型的基本原理和假设；
The basic principle and hypothesis are analyzed on the Z D and Q D combustion models of the diesel engine.
分析了柴油机零维、准维燃烧模型的基本原理和假设；
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