Adopting line-structured laser sensor, successfully applies the visual inspection to the grid array device coplanarity measurement. With the mathematics model put forward, the evaluating method based on the three-point seating plane is presented, and corresponding experimental studies on the BGA chip coplanarity are carried out, which achieve satisfactory results.
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Being directed against assembly deformation, correspondent measures are adopted, which solve the key problems in assembly and achieve satisfactory results.
针对套类零件在装配时产生的变形问题，采取了相应措施，解决了装配中的关键问题，取得了满意效果。
Barley syrup, which was similar to common wort in compositions, could be produced by such technique and its use instead of part wort in beer brewing could also achieve satisfactory results.
采用此工艺，可生产出与普通麦汁成分相近的大麦糖浆，将其代替部分麦芽汁应用于啤酒酿造，获得了理想的结果。
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