1、用中间继电器作为缺相保护装置的线路

2、脚踏开关踩气缸动作实物彩图接线

3、浮球开关的工作原理讲解

4、常用元件代号及图形符号的画法

5、电工必学的7个基础程序-自锁-多点启停-点动加联动运行

6、电工必学的7个基础程序-延时接通、延时断开-交替输出

7、电工必学的7个基础程序-连锁和互锁-闪烁电路

8、220V电机的倒顺开关实物彩图接线方法

9、变频器电路的接线方法

10、时间继电器的接线方法-实物彩图

11、以太网跟PLC通信电路实物图

12、正反转电路实物彩图接线方法

13、互感器与电表的实物彩图接线方法

14、自制温控风扇电路实物彩图方法

15、星三角380V主电路实物彩图接线方法

16、电接点压力表实物彩图接线电路图

17、接触器实现单开双控的实物彩图接线方法

18、空气能热水循环系统电路

19、变频器接线实物彩图电路展示

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鬱袁辉3861数字式电压表的固有误差ΔU=±(0.001%读数+0.002%满度),求用2V量程测量1.8V和0.18V电压时产生的绝对误差和相对误差 -
贡郊蓝19387733079 ______[答案] 用2V量程档,测1.8V电压的误差为 ΔV=±(0.001%Vx+0.002%Vm) =±(0.001%*1.8+0.002%*2.0)=±5.8*10^-5V 相对误差=58uv/1.8v=32.2*10^-6用2V量程档,测0.18V电压的误差为 ...

鬱袁辉3861abb变频器ACS510恒压供水时具体参数设置
贡郊蓝19387733079 ______ 先恢复一下出厂值,压力表的反馈信号接AI2上,9902=6,9905--9909=电机名牌参数4010=19,4011=目标压力占压力表量程的百分比,其它先别设.看说明书PID宏端子接...

鬱袁辉3861为什么浮力指的是物体上下表面所受的压力差,为什么浮力不是下表面所受的压力? -
贡郊蓝19387733079 ______[答案] 1,原因法:上图 F浮=F向上-F向下 F浮=(P向上-P向下)S F浮=(h下-h上)ρ液gS 这里物体和容器底部如果密合,F向上消失,物体不受浮力了 F向上的存在是阿基米德原理的使用条件! 2:下图视重法 在空气中用弹簧秤称量物体重量, 弹簧秤示...

鬱袁辉3861冈崎片段是怎么连接的?冈崎片段是用什么东西连接的? -
贡郊蓝19387733079 ______[答案] DNA连接酶催化DNA相邻的5′磷酸基和3′羟基末端之间形成磷酸二酯键,使DNA单链缺口封合起来.

鬱袁辉3861最大气泡法测表面张力为什么要读取最大压力差 -
贡郊蓝19387733079 ______[答案] 最大气泡法中,表面张力受压差和气泡的曲率的影响只有知道压差和曲率才能求出表面张力.而气泡的曲率和压差相对应.气泡即将脱离玻璃管时的曲率可通过玻璃管的直径确定,这时对应着最小的界面曲率,也就相应的对应最大压差.