Two forms of vector control are effective in a wide range of circumstances.
两种控制病媒措施在许多情况下行之有效。
Two forms of vector control are effective in a wide range of circumstances. These are.
两种控制病媒措施在许多情况下行之有效。
A control flow statement forms a complete unit of execution.
控制流语句形成执行的完整单元。
Can also use other forms of electrical control devices.
也可以采用其它形式的电气输入控制器件。
Can also use other forms of electrical control devices.
也可以采用其它形式的电气输入控制器件。
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