QPOP QP OS P 不是因为寂寞才想你
Well, at point P, the velocity vector QP is perpendicular to the line QP, 1 so the sine of that angle is one.
点P，速度向量,垂直于直线，所以该角的正弦值为。
The effects of different phosphorus concentrations of water system on DTP, P-in-cell content of tissues (QP) and cell multiplication of Microcystis aeruginosa were studied in laboratory experiments.
通过室内模拟的方法研究了在磷质量浓度不同的水体条件下，在铜绿微囊藻水华形成过程中微囊藻的增殖特征及细胞内磷、可溶性磷的变化特征。
The QP values as well as the velocities Vp of P wave in dry and saturated specimen of Xiaolangdi sandstone and Fangshan marble are studied as functions of axial stresses.
研究了单轴压缩下超声P波在干燥和饱水的小浪底砂岩和房山大理岩中的衰减和速度。
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