涌泉灌溉用于大田作物主要问题是流量小,沟、畦横断面大,水流在田间很难向前推进。
硅酮油起泡器能始终在生长管内产生一正气压位差。
带有都卜勒面积流速声测、超声波、鼓泡器、水下探针测量技术的明渠流量表;
1·Large capacity, able to boil water in a short time, the function is well-found, increase cup lid bubbler and preventing scald structure;
容量大,能在短时间煮开水,功能齐全,增加杯盖饮水口和防烫伤结构;