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In the industrial field, low-frequency digital phase meters are often used to accurately measure the phase difference between two signals. For example, they are widely used in power systems, frequenc...[Details]
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When the V-cone flowmeter measures steam flow, there are many differences from the installation of conventional flowmeters. Due to the particularity of steam, attention must be paid to installation is...[Details]
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With the rapid development of electronic products, household appliances are becoming more and more intelligent. Intelligent household appliances all have a common feature, which is that they all us...[Details]
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According to foreign media reports, the Korea Institute of Mechanical and Materials (KIMM) has developed a battery electrode design and processing technology. The technology is said to significantly ...[Details]
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According to foreign media citing people familiar with the matter, Ford will announce a restructuring plan on Wednesday local time, splitting electric vehicles and internal combustion engines into tw...[Details]
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The basic 51 microcontroller has four parallel ports, which also includes a serial port. When there are not enough interfaces, people will think of using external chips for expansion. However, al...[Details]
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Recently, Dinglong Holdings' official microblog reported that its subsidiary Dinghui Microelectronics sold 10,544 CMP polishing pads in July this year, the first time that the monthly sales of this p...[Details]
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Since the waste incineration power generation technology has the characteristics of high efficiency in treating domestic waste, saving energy, short construction period and environmental protection...[Details]
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The keyboard scan uses the inversion method to read the keys: first output zero level from the high 4 bits of port P2, and read the keyboard status from the low 4 bits of port P2; then output zero le...[Details]
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According to foreign media reports, Google demonstrated a new remote control technology at the Google I/O conference, which can turn Android phones into remote controls for anything the user wants ...[Details]
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1 Introduction
The pre-shrinking machine is the last process of fabric finishing in the printing and dyeing industry. It is a method of mechanical physical pre-shrinking (rubber blanket) of fa...[Details]
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Let me tell you a story first. As a person who "gets bored when having too many things", I have tried many ways to deal with old clothes. Later, I found that there are people who specialize in recy...[Details]
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C1970 and C1971 are both high frequency transistors with the same appearance but different powers. When distinguishing, you can use a digital meter to measure. The one with the middle pin as the em...[Details]
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As shown in Figure 4.14.2, the parallel port P1 of AT89S51 is connected to a 4×4 matrix keyboard, with P1.0-P1.3 as input lines and P1.4-P1.7 as output lines; the serial number of each key is displ...[Details]
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As shown in Figure 1.52, La is composed of n1 and n2 windings, among which C2 and n2 windings together form a negative feedback control channel to improve the voltage stability of the purification po...[Details]
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