查询词典 wave crest

These waves, like the crest of an ocean wave, are surfaces on which the phase relationship is constant.

这些波，像海浪的浪峰，是平面的，在平面上相位关系恒定不变。

Calcium carbonate and soluble glass and so on were confected as alkaline antifouling agent. The Infrared Spectrometry results showed that 2275-2250 cm~(-1) diagnostic absorb wave crest in part A and 3390-3200 cm~(-1) in part B and 1730 cm~(-1) in coating film strongly proved polymers reacted just as the reacting mechanism, that means polysiloxane which offer low-surface-energy property linked Polyurethane system by —OH groups reacting with —NCO groups. Relative molar mass of part A and part B was determined by Gel Permeation Chromatography and the results were appropriate. Surface-energy was determined and results were between 33.6-47.17 mN/m and it increased when alkaline antifouling agent was put into the coating. Alkaline antifouling agent was releasing steadily when the coating film was dipped in seawater. As time gone, the pH value of seawater was increasing. Solubility parameter and results showed that there was no corrasive phenomenon between the polyethylene strand and the coating.

红外光谱分析结果表明，出现在A组分中的2275～2250cm~(-1)处的异氰酸酯特征吸收峰、B组分中的3390～3200cm~(-1)处硅羟基的特征吸收峰及出现在固化后涂膜中的1730cm~(-1)处氨基甲酸酯基团的特征吸收峰证明了涂料成膜物质交联固化符合本文的设计要求，即赋予涂膜低表面能特性的有机硅组分通过—OH基团与—NCO基团的反应已经链接到聚氨酯体系中；凝胶渗透色谱结果表明，成膜物质的A、B组分均为低分子量，符合预聚物的要求；涂膜表面能的测算结果表明，涂膜的表面能在33.6～47.17mN／m之间；加入碱式防污剂后涂膜的表面能略有升高；碱式防污剂的释放平稳，随着涂膜在海水中浸泡时间的增长，pH值有增加的趋势；用溶解度参数原则来评价涂料与网绳的涂装，结果表明，本试验研制的防污涂料对聚乙烯网绳无溶蚀作用。

"We know that something needs to spark us off and then we will be on a crest of wave," he said.

欧文又说：我们知道有些因素导致了现状，我们正处于风口浪尖上。

If it is disabled, hotspots will be created at the crest and the trough of the standing wave.

如果转盘不动，热点会在驻波的波峰或波谷处产生。

A pony in my hand to resemble, vividly tamely jumped from the sparkling wave crest to fly.

我手把着方向舵，那小船在我手里就像驾驭着一匹小马似的，轻快地驯顺地从亮晶晶的浪尖上跳跃首飞了起来。

Like the wave that reaches its crest, this height of manyness will dissolve itself and bring about the beginning of oneness in illusion.

这意味着现已达至极限的富裕与贫穷、文化与文盲、嫉妒与仇恨等，都将消融于众生之间一体感里。

Under confused sea condition, the structures may subject to very strong w ave impulsive 1oad due to slamming by the wave with significant crest when waves propagate underneath the structure and surge up to its subface.

在海岸和近海工程中，近海采油平台、桩基码头和海上栈桥等上部结构位于浪溅区的建筑物的安全与波浪冲击作用关系极大。

Under confused sea condition, the structures may subject to very strong w ave impulsive 1oad due to slamming by the wave with significant crest when waves propagate underneath the structure and surge up to its subface. Previous studies indicate that impact pressures are characterized by an initial peak pressure of considerable magnitude but of short duration occurs, followed by a slowly-varying uplift pressure of less magnitude but of considerable duration, and which typically is first positive, then decreases to zero and becomes negative, In hostile sea state, the peak pressures may cause the damage of the horizontal members of the structures or make the whole superstructure collapsed.

若这些海上建筑物的上部结构底高程较低，在恶劣海况下当大波浪在其面板下面通过并与之接触时，面板下面除了作用有强度变化较缓慢的波压力外，在波峰刚接触到面板时尚存在着历时很短但强度极大的冲击压力，这种极强冲击荷载会引起建筑物的整个上部结构失稳或造成局部破坏。

As when some mighty wave that thunders on the beach when the west wind has lashed it into fury- it has reared its head afar and now comes crashing down on the shore; it bows its arching crest high over the jagged rocks and spews its salt foam in all directions- even so did the serried phalanxes of the Danaans march steadfastly to battle.

正如巨浪击打涛声震响的海滩，西风卷起峰尖，一浪接着一浪地冲刷，先在海面上扬起水头，然后飞泻下来，冲荡着滩沿，声如滚雷，水波拱卷，对着突兀的岩壁击撞，迸射出四溅的浪花，达奈人的队伍，一队接着一队，蜂拥而至，开赴战场；各位首领统带着自己的

Using this method, wide dimming range can be achieved with narrow frequency range and constant DC link voltage. And the lamp current keeps perfect sine wave all the time, which means low lamp current crest factor is obtained. Its validity is verified by simulation and experiment.

本章最后提出了一种基于T型滤波器的新型的调光方法，采用此方法可以在保持逆变器直流母线电压和开关占空比不变的情况下，只需很窄的频率范围就能达到非常宽的调光范围，而且在整个调光范围内灯电流都基本上是完美的正弦波，这就意味着可以始终保持很低的灯电流波峰因数，仿真和实验结果充分验证了它的优点。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。