准则

These five principles are based on the WTO framework and existing norms of international trade.

这五条原则，是建立在世贸组织框架和国际贸易基本准则基础上的，也是正确认识和妥善处理今后一个时期中美贸易可能出现的分歧和摩擦所需要的。

To ensure highest dependability, all be IP55 with electric machinery in intertropical area place standard and use F insulation social estate.

为保证最高，的可信性，在热带地方使用电机都是IP55准则和使用F绝缘级別。

Yet for North Korea, intransigence is the norm.

但对朝鲜来说，寸步不让就是准则。

The sum of behaviour is to retain a man's own dignity, without intruding

人的行为准则是，维护自己的尊严，不妨碍他人的自由。

The sum of behavior is to retain a man's own dignity, without intruding upon the liberty of others.

人的行为准则应该是：维护自己的尊严，不妨碍他人的自由。

The sum of behaviour is to retain a man's own dignity, without intruding upon

人的行为准则是，维护自己的尊严，不妨碍他人的自由。

Without intruding upon the liberty of others.

人的行为准则是，维护自己的尊严，不妨碍他人的自由。

The sum of behavior is to retain a man's own dignity,without intruding upon the liberty of others.

人的行为准则是：维护自已的尊严，又不妨碍他人的自由。

To retain a man's own dignity, without intruding upon the liberty of

人的行为准则是，维护自己的尊严，不妨碍他人的自由。

Firstly, the recent developments in controllability and observability for switched system are reviewed. Secondly, by means of properties of invariant subspace, the controllability for switched systems with continuous-time and discrete-time subsystems, and a class of discrete impulsive switched systems is respectively investigated. Some sufficient and necessary conditions of controllability are proved. In the end, some simple criterions for controllability and observability of switched symmetric composite systems are set up.

首先介绍了切换系统能控性与能观性方面的一些重要结论；其次，用不变子空间的性质分别研究了同时含有连续子系统和离散子系统的切换系统和一类离散脉冲切换系统的能控性，建立了相应的充分性与必要性判别准则；最后，研究了切换对称组合系统的能控性与能观性，得到了此系统能控性与能观性的简单判据。

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％。