Acoustic transit time flowmeter of wide application and high performance it is a kind of automatic river discharge measurement instrument that can be widely promoted.
声学时差法流量计适用范围广，性能好，是一种可以推广的河流流量自动测量仪器。
Acoustic transit time flowmeter of wide application and high performance it is a kind of automatic river discharge measurement instrument that can be widely promoted.
声学时差法流量计适用范围广，性能好，是一种可以推广的河流流量自动测量仪器。
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