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Sequence valve replaces complex circuit

, : Sequence valve replaces complex circuit. Hydraulics and Pneumatics 32(11): 55-57

A hydraulically controlled automatic sequence valve for raising and lowering row markers on a maize planter is described.


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Kim, D.Ik.; Rhee, H-Gyo.; Song, J-Bong.; Lee, Y-Woo., 2007: Laser output power stabilization for direct laser writing system by using an acousto-optic modulator. We present experimental results on the output power stabilization of an Ar(+) laser for a direct laser writing system (LWS). Instability of the laser output power in the LWS cause resolution fluctuations of being fabricated diffractive optical ele...

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