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1·The system adopts two level distributed control.

该系统采用两级分布式控制。

2·The control system has two level control system and two communication network.

整个控制系统由二级控制系统和二层通讯网络构成。

3·Uses two level of belt transmissions, the transmission is steady, the service is convenient.

采用二级皮带传动，传动平稳，维护方便。

4·Burning boiler control system is designed in two level control structure: monitoring level and loop level.

锅炉燃烧控制系统设计为两层控制结构：监督级和回路级。

5·In this paper the model of two level atomic momentum spread in amplitude modulated standing light wave was investigated.

分析了二能级原子在振幅调制驻波场中动量扩散模型。

6·That is because it does not include two Level 2 process areas, which cover essential best practices for project implementation.

这是由于它没有包括2级的两个过程领域，而它们包含了项目实现中基本的最佳实践。

7·Objectives: To explore the applicability of two level variance component model in research on variability between interviewers.

前言：目的：探讨两水平方差成份模型在评价调查者间变异的应用价值。

8·The simple steel grid structurally supports the two level space, where only the bathroom and bed loft is shielded from the main living space.

简单的钢网格从结构上支持这个两层空间，只有浴室和阁楼卧室从主要生活空间遮蔽掉。

9·The system adopts PC technique to form two level control scheme with web function which can be used anywhere without the limitation of the power supply and place.

整个生产线控制系统采用PC技术形成两级控制并具有网络化功能。

10·If the two level curves are tangent to each other that means they have the same tangent line. That means that the normal vectors should be parallel. Let me maybe draw a picture here.

如果两个等高线相切，说明它们的切线相同，也就是说他们的法向量应该平行，我再在这里画个图。