查询词典 wave velocity

Refraction: The change of direction of a light ray or energy wave from a straight line as it passes obliquely from one medium to another in which its velocity is different.

折射：当光线或能量波倾斜着穿过一种媒介到另一种媒介时，由于光线在两种媒介中的传播速度不同，导致其传播方向发生偏转。

Later,calculation of vertical velocity and dispersion relation for three-ply type areperformed, as is done for the case when density is stratified continuously. For thelatter, it gives internal wave's propagation form in space.

针对密度分布的三层模式，计算了垂向速度模态与内波的色散关系；连续分层的情况，则给出了半板造波的垂向模态分布与空间传播形态。

The dynamical properties of frozen soil model are related to propagation velocity of Ultrasonic wave in frozen soil.

冻土模型的动力学性质同超声波在冻土中的传播速度有关。

It shows that depth-weighted optical signal is different from the signal only on the top layer of tissue in velocity of upstroke, duration and amplitude and the discrepancy are enhanced with the increase of the probing depth especially in the spiral wave activity.

深度荧光组成的光动作电位与表层细胞光动作电位的上升速度、时程和幅值等有明显差异，其产生的原因和不同深度细胞的跨膜电位处于动作电位不同时期有关。

Xwfd pre-stack migration based on wave equation has strong adaptability to the medium which has strong variable transverse velocity and it can be used for migration with dual-complexity.

波动方程的频率空间域有限差分深度偏移对介质速度横向变化有较强的适应性，适宜于复杂构造的偏移成像。

The first break is picked up from synthetic P-wave record, and the distribution of surface velocity is analyzed.

基于合成纵波记录拾取了初至信息，对地表速度的分布特征进行了分析。

Ultrasonic wave pulse technique was used to investigate the velocity of sound and attenuation of the damaged samples PBXN-S.

采用超声探伤仪对损伤材料PBXN-5的声速和声衰减进行了测量。

METHODS By the means of viscometry , the effects of reaction time , chitosan and acetic acid concentration on the hydrolytic velocity of chitosan by ultrasonic wave were investigated .

采用粘度测定法，探讨了超声波辐射时间与壳聚糖粘度的关系以及壳聚糖的浓度，醋酸的浓度对降解速度的影响。

Based on the existed wave mechanics and by means of the study of the motion and effect of particles in the propagation of waves, this article puts forward that mechanics' effect in the propagation of waves is not only comprised of "stress from deformation" but also of another different form of force——"applied force from motion" which is decided by velocity.

核工业二九O研究所，韶关 512026摘要：在原有波动学的基础上，通过对波传播质点的运动和作用进行研究，提出了波传播的力学作用不仅有因形变产生的应力，还存在着另一种由速度决定的不同形式的力——"动作用力"。

The experment results show that the velocity of shock wave approximate equals tothe sound speed of water.

实验结果表明，冲击波的传播速度约等于水中声速。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。