互通立交的型式很多，有喇叭型、菱形、环形、苜蓿叶型、半定向式、定向式及复合式等几种基本形式。

There are many types and forms of interchange, such as trumpet type, rhombus type, ring type, alfalfa leaf type, partly directional form, directional form, compound form and so on.

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利用电阻应变片、动态压力传感器、滑环式引电器和磁带记录仪等，录取叶片振动应变和动叶出口压力信号，然后回放磁带，做信号处理。

Using resistance strain gage, dynamic pressure sensor, slip ring and tape recorder, the blade vibration strain and exit pressure signals of rotor blades are recorded and then processed.

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用途：主要用于防治水稻、小麦、棉花等作物上的刺吸式口器害虫，如蚜虫、叶蝉、蓟马、白粉虱及马铃薯甲虫和麦秆蝇等。

Application: it is a systemic insecticide, with both contact and stomach action against sucking mouthparts pests such as plant hoppers, aphids, leafhoppers, thrips whitefly, ect.

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