mycobacterial interspersed repetitive unit 分枝杆菌散在重复序列 ; 分枝杆菌散在重复单位
PU is a polymer with urethane segment repetitive structure unit formed after the reaction of TDI and PPG.
聚氨酯是由异氰酸酯与多元醇反应制成的一种具有氨基甲酸酯链段重复结构单元的聚合物。
An improved repetitive control algorithm was developed to improve tracking accuracy for a linear servo unit in a numerical piston lathe.
为了提高非圆数控车削系统中直线伺服单元的跟踪精度，该文提出了一种改进的离散重复控制算法。
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