其次，电力网络的典型网络结构有环网、放射型、单端供电型、双端供电型等形式。

Secondly the power network's the typical feature are loop structure , radial type, supply fed at one end and supply fed at two ends.

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桥架的金属结构由主梁和端梁组成，分为单主梁桥架和双梁桥架两类。

Bridge's metal structure from the main beam and side beams, divided into single-and dual-beam bridge girder bridge types.

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本文提出了一种新结构的相关双取样读出电路，该电路不仅结构简单，同时具有功耗低、噪声小、单端输出等优点。

In the paper a new structure of the readout circuit CDS structure was presented, the circuit is not only simple in structure, but also low power consumption, low noise and single-ended output.

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