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- The net rate at which energy is extracted from the primary waves in this way can also be found. 也可以求得以这种方式从主要波吸取能量的净获率。
- Primary waves are identical in character to sound waves. The ground is forced to move forwards and backwards as it is compressed and decompressed. 最初的波与声波有相同的特点。当地面受到挤压和得到放松时就会被迫前后移动。
- Primary waves are identical in character to sound waves.The ground is forced to move forwards and backwards as it is compressed and decompressed. 震动开始时地壳内部有一些突然的移动,随后地震波开始在那一点传开来。
- The warning system works by detecting primary waves, which spread from the epicenter of a quake and travel faster than the destructive shear waves. 预警系统的工作原理是探测主要的地震波，主震波由震中传出比破坏性的波传播速度快。
- Primary waves were recorded at a mean propagation speed of 55.58 mm/s from UES to upper segment of esophagus ,22.15 mm/s from upper to middle segment,41.12 mm/s from middle to lower segment,and 14.09 mm/s from lower segment to LES. 食管下括约肌的静息压为2.;55±1
- The calculation method of primary wave and second wave speed were studied when the oil saturation and effective pressure of unconsolidated sandstone reservoir with high porosity in X Oilfield changed. 研究了X油田高孔低胶结砂岩储层在含油饱和度和压力变化时纵、横波速度计算方法,并将计算数据与实际测井资料进行了对比。
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- The little boy left primary school at eleven. 这个小男孩十一岁时小学毕业。
- Sure. We are friends since primary school. 当然，我们从小学就是朋友了。
- I started primary school when I was 5 years old. 我五岁时开始读小学。
- A primary cause of Tom's failure is his laziness. 懒惰是汤姆失败的主要原因之一。
- Primary school teachers use a lot of visual aids. 小学教师使用大量的视觉教具。
- Love and hatred are primary emotions. 爱和恨是基本的情感。
- The Democratic primary was held this month. 民主党候选人初选於本月举行。
- Primary education comes under the umbrella of local government. 小学教育受地方政府的保护。
- He only accepted the primary education off and on in his childhood. 他小时候只断断续续地接受过初等教育。
- The primary reason for advertising is to sell more goods. 做广告的根本目的是要多出售货物。
- Collins was nosed out by his opponent in the primary. 柯林斯在初选中就被他的对手击败了。
- Not derived from something else; primary or basic. 基本的不是从它物派生的; 原本的或基本的
- We lost the New Hampshire primary. 我们在新罕布夏州的初选失利了。
