Aluminum frame, adjustable folding ramp after the handrails, removable foot care, PU wheel, Quick release pneumatic rear wheels, auxiliary support wheel, adjustable pedals.

铝合金车架，后折可调斜扶手，可拆脚托，PU前轮，快拆充气后轮，辅助支撑轮，可调脚踏板。

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The postpositions in Tong Jin-pu dialect of Ci Li, Hunan can be divided into thematic postposition and auxiliary postposition from the syntax classification.

汉语后置词从句法类别上分为四类：题元后置词、辅助性后置词、连接性后置词、定语后置词。

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Waterborne polyurethane (PU) flame retarding gum (I) was synthesized with a special technology by use of waterborne PU as the base material and the added flame-retardants and auxiliary agents.

采用水性聚氨酯（PU）为基料，添加阻燃剂及相关助剂，用特殊制作工艺合成了水性PU阻燃涂层胶。

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