Gate valve is the closing member (gate) along the centerline of the vertical movement of the valve. Gate valve in the pipeline can only be fully open and all off with off, not for regulation and throttling. Gate valve is the use of a wide range of valves, the general diameter DN ≥ 50mm cu…

[Chinese instrument network meter patent] creative limit, instrumentation invention. Today, we introduce a national patent for invention invention - a closed type ultrasonic water meter and heat energy meter. The patent was applied for by Hunan Changde Brand Water Meter Manufacturing Co., Ltd.,…

Dongfeng Tianlong Top Four Back Eight …

Samba, Caipirinha and football: most people associate these words with Brazil. So far, our colleagues are not dancing samba and drinking Caipirinha for the whole day. It’s world cup and everyone in Brazil from young to old and men to women, everyone is crazy about it (b…

1 Soil nutrient rapid measurement technology and its application characteristics
1.1 Significance of Soil Nutrient Quick Measurement The soil nutrient fastness tester is an advanced agricultural instrument based on the soil nutrient fast measurement technology. The soil nutrient…