Correct type selection will reduce purchase and use cost.
正确的机型选择会降低购买和使用成本。
Mathematics model of type selection design was established and computer software design was completed.
建立了离心除尘器选型设计的数学模型，完成了计算机软件设计。
Type selection and design of control chip.
控制芯片的选型与设计。
Type selection and design of control chip.
控制芯片的选型与设计。
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