从结冰过程的基本方程出发，并要求在缩比相似准则中满足几何尺寸、流场、水滴运动及撞击特性、结冰过程的热力学特性等相似，推导出一种适合结冰试验的相似准则。
To achieve similarity in ice accretion, it is necessary for the scale test to simulate the geometry, the flow field, the drop trajectories, the total water catch and the heat transfer.
结合饲料中添加药物、哺乳仔猪药水滴鼻等药物防治措施，可使猪群的临床发病率由51.39％降至1.39％，生长肥育猪的综合性能指标得到较大改善。
The clinical incidence of AR reduced from 51.39% to 1.39% when vaccination plus drug control, and multiple indexes were well improved for growing-finishing pigs.
本实用新型可使水滴和灰尘等异物不能进入开关接点，从而维持良好的开关功能。
The switch device can enable foreign matters such as water drops and dust not to enter the switch junction, thereby maintaining good switch function.
将水滴从不同高度滴在平板音箱板面的各个位置，根据等动量法，建立水滴直径同平板音箱振动信号振幅之间的统计函数关系。
According to the equal-momentum principle, the regression relation between the diameter of the water-drop and the amplitude of the signal can be established.
该装置由水滴速度测试系统、滴速控制系统、显示装置、单片机系统、键盘和报警等系统组成。光电传感器用来测量液体滴速，利用步进电动机的转速来控制点滴速度，显示装置利用液晶显示器。
The apparatus constitutes the system of testing the liquid drop speed, the system of controlling the liquid dropping speed, LCD display system, MCS-51 system, the key board and alarming system.
该装置由水滴速度测试系统、滴速控制系统、显示装置、单片机系统、键盘和报警等系统组成。光电传感器用来测量液体滴速，利用步进电动机的转速来控制点滴速度，显示装置利用液晶显示器。
The apparatus constitutes the system of testing the liquid drop speed, the system of controlling the liquid dropping speed, LCD display system, MCS-51 system, the key board and alarming system.
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