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美国联邦政府通过对处境不利儿童进行教育补偿,以追求教育公平,改善人群代际恶性循环的早期儿童项目。又称先行计划。
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diffraction limited system
diffraction-limited system
diffraction loss
diffraction measurement
diffraction method for polycrystal
diffraction methods
diffraction microscope
diffraction of acoustic wave
diffraction of light
diffraction of sound
diffraction of X-ray
diffraction of Xray
diffraction optical element
diffraction optics
diffraction order
diffraction pattern
diffraction problem
diffraction ring
diffraction scattering
diffraction screen
diffraction spectrum
diffractive
diffractive binary optics
diffractive breakup
diffractive dissociation
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