查询词典 essential

Introduction Joining and adhesion technology is essential in every field.

介绍 加入和粘接技术是必不可少的各个领域。

Joining and adhesion technology is essential in every field.

介绍 加入和粘接技术是必不可少的各个领域。

As the foundation of ultrasonic testing of composite materials, this thesis is intended to explore in detail a number of features of wave propagation in anisotropic plates, and the following essential problems will be considered:(1) Propagation of plane bulk waves in homogeneous and orthotropic anisotropic media;(2) Lamb wave propagation in multilayered anisotropic plates;(3) Influence of isotropic solid or liquid loading on Lamb wave propagation in anisotropic solid media;(4) Influence of interface layers on Lamb wave propagation in layered anisotropic composite laminates;(5) Dispersion characteristic analysis of attenuation Lamb wave while existing an thin viscous layer which is used for simulating the poor curing in adhesively bonded joints.

作为复合材料超声检测的基础，本文研究了如下国际前沿性的课题：（1）平面体波在正交均匀各向异性媒质中的传播；（2）多层各向异性媒质中Lamb波的传播；（3）各向同性固体或液体负载对各向异性固体媒质中Lamb波传播的影响；（4）界面层对层状各向异性复合媒质中Lamb波传播的影响；（5）胶粘剂未固化而呈现粘弹性时粘接结构中衰减Lamb波的频散特性分析。

Diligent is an adman 's essential condition .

勤奋是一个广告人不可或缺的重要品质。

It's essential in a work environment for administrative purposes as well as for security.

它的必不可少的工作环境，为行政目的，也为安全。

This is an essential requirement for admission to college.

这是进大学的最基本要求。

Integrity is an essential factor to win the adulation and trust of others.

正直使你得到别人的尊敬和信任。

It is very tough but essential to improve the teaching quality for adult higher education.

如何提高成人高等教育的教学质量是一个难题，也是一个重要的课题。

It is a popular show, so advance booking is essential.

这是个很受欢迎的演出，所以一定要提前订票。

E.g. It's a popular show, so advance booking is essential.

这是个很受欢迎的演出，所以一定要提前订票。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。