The general formula of the equivalent resistance of ladder type network are achieved with elementary method, and some relevant problems are discussed.

用完全初等的方法给出了梯形电阻网络等效电阻的通项公式，并对相关问题进行了讨论。

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The tourism in Gansu Province is at the stage of resources-oriented type, and located in the inferior position in the travel image ladder of the Northwest.

甘肃省旅游业正处于资源导向型阶段，在西北地区的旅游形象阶梯中，位置极为不利；

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4th ladder coconut palm for channel steel type design anti - curving performance although surpasses the first generation , but still insufficient ideal.

4梯梆为槽钢式设计，抗弯曲性能虽然优于第一代，但依然不够理想。

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"Using this type of design we could provide opportunities for local younger people to get a foot on the property ladder through shared ownership".

BBC: NEWS | UK | England | Devon | Production line rolls for houses