必不可少

Computer simulation results show that a continuous surface obtained from a group of discrete data of a reference defect can be used to determine the approximate shape of an unknown defect.

求解正问题的各种方法不仅可用于研究影响红外探测精度的各种因素，而且它们在求解反问题及处理噪声的过程中也是必不可少的。

Because of their wide availability and the automatic production, one has to contral the behavior of the materials precisely.

由于使用这些材料越来越普遍，自动化生产替代了手工生产，用精确的方法模拟材料的变形是必不可少的。

This is essential to be applied in places where the kitchen walls and worktop edges converge.

这是必不可少的过程中应当适用的地方，厨房的墙壁和worktop边收敛。

Invite some friends over for the first cookout of the season.

这可是每年春天必不可少的项目哦。

Chemical nitrogen fertilizer applied was an absolutely necessarily technical and measure in red soil region for the purpose of improving quality of corm and wheat. The impact of chemical nitrogen fertilizer on quality of corm and wheat was better than that of organic nitrogen fertilizers.

为提高红壤旱地玉米和小麦子粒的品质，使用化学氮肥是一项必不可少的技术措施，同时化学氮肥对玉米和小麦子粒品质提高效果大于有机氮。

As a breast reduction is not vital to your health, it is known as cosmetic surgery.

作为乳腺癌减少并非是必不可少的，以您的健康，这是被称为整容手术。

These book became essential for the counterculture during the 1960s and influenced a generation's perception of life.

这些书籍成了必不可少的counterculture在1960和影响了一代人的生活感受。

You love your business, and it may initially seem counterproductive to take some time away.

但是，当你启动一个企业，时间休息和充电是必不可少的，如果你想有精力做一切你想做的事。

Democracy has grown as the universal value pursuit of various countries and nationalities, because it is the absolutely necessary basis that it can ensure social stabilization, advancement and continuous development.

政治民主之所以发展成为不同国家、不同民族普遍的价值追求，在于民主政治是保证社会稳定、进步与持续发展的必不可少的基础。

This feature is essential in an interactive courseware development.

这个功能是必不可少的一个交互式课件的发展。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。