用光学显微镜观测和分析电火花线切割硅表面沿纵向分层择优腐蚀后的形貌；
The surface morphology after preferential corrosion along the vertical orientation was observed via an optical microscope.
产品应无分层、无开裂、无不均匀表面、细腻的黑色块状固体。
No layering, crack, uneven surface for the product and it should be smooth black solid block.
建筑外表面均为未经处理的、回收再利用的橡树木板，呼应了原来建筑砖砌墙体的外表面，原来建筑的外表面通过混凝土被清楚地分层处理。
Three jettying levels clad in untreated reclaimed oak boards evoke the tone of the brickwork cladding the existing buildings, which are divided into clearly defined layers by concrete bands.
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