Instead, the known flow, head and efficiency, shaft power can also be obtained.
反之，已知流量、扬程和效率，也可求出轴功率。
The utility model relates to a novel shaft head seal.
本实用新型涉及一种新式轴头密封。
Aluminum alloy shaft and plastic head, shaft length could be adjustable.
铝合金杆身，头部为塑料杯。杆身可伸缩。
Aluminum alloy shaft and plastic head, shaft length could be adjustable.
铝合金杆身，头部为塑料杯。杆身可伸缩。
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