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電子煙和香煙哪個危害大?

Posted by dajksdhj21 on September 18, 2024 at 10:31pm 0 Comments

長久以來,關於電子煙和香煙哪個危害更大的討論未曾停歇。在全球範圍內,吸煙已被證明是導致多種嚴重健康問題的主要原因,包括肺癌、心臟病和慢性阻塞性肺疾病。隨著人們對健康的關注增加,電子菸作為傳統香煙的替代品逐漸流行起來。







電子煙和香煙哪個危害更大仍然是一個備受關注的問題,一起來看看,希望能幫到你。



傳統香煙通過燃燒煙草來釋放尼古丁,同時產生大量有害物質,包括一氧化碳、焦油和數千種其他化學物質,其中許多是已知的致癌物。長期吸煙者面臨著嚴重的健康風險,如肺癌、心血管疾病和呼吸系統問題。香煙的危害已被大量科學研究和公共衛生數據所證實。



電子煙則通過加熱含有尼古丁的液體(通常稱為… Continue

Some of you may have heard the term "PCB Assembly" and wondered what it meant.

The purpose of this article is to provide some light on the subject.

The entire process of producing electronic devices is lengthy and complex.
The substance - silicon or any other semiconductor - is the starting point for all electronics.
These "wafers" are turned into "smart" electrical microprocessors and chips through a series of lengthy and expensive clean room processes.

These chips are incapable of doing anything on their own and must be incorporated onto a printed circuit board (PCB) in order to function (like operate your computer or telephone).

A huge number of companies now design and market these chips as end-products. However, these businesses can't afford to buy all of the equipment needed to put their chips on PCBs and create their final product.

PCB assembly firms specialize in this. These (EMS) companies operate a variety of Surface Mount Assembly lines and provide PCB Assembly services to other businesses that do not want to do it themselves.

The PCB Assembly process is made up of several different steps:

1) Initial Solder Paste Printing - Using a stencil, the initial solder paste is printed onto the PCB. This is the substance that connects the gadgets to the PCB.

2) SMT Pick & Place Assembly - The core of any PCB assembly line is SMT Pick & Place Assembly. This technique takes all of the individual chips and precisely inserts them on the PCB where they belong.

3) Reflow/Through-hole curing - After the chips are placed on the solder paste, the boards are placed in a conveyor oven to melt the solder and bind the chips to the PCB.

4) Protective Lacquer Coating - A protective lacquer coating is required on some boards. Conformal "Selective Coating" machines apply a layer of protective coating on PCBs rapidly and precisely.

5) Automated Optical Inspection and Automated X-ray Inspection (AOI and AXI). These procedures are essential for ensuring that no errors were committed during the assembly process.

6) Reworking if necessary - Some devices can be redone if any errors or faults are discovered. Reworking entails heating the board or device and removing it from the PCB in order to replace it with a new one.

Each of these processes is a world unto itself, and each is considered a separate technical sector. For each of these PCB Assembly sectors, there are multiple specialist manufacturers.

Prototyping is a time-limited process that should take as little time as feasible to prepare for actual manufacturing. PCB prototype companies are likely to be involved in manufacturing as well. As a result, many businesses seek to create excellent prototypes. Prototyping and manufacturing PCBs have been sped up and made as error-free as possible thanks to advances in technology, particularly computerization. As a result, it's a good idea to go with a PCB company that uses the most up-to-date technology and has the capability to ensure that the error margin is nearly zero, harmful chemicals are avoided, and PCB sizes are kept as small as possible while still meeting the requirements for modern electronic devices.

ChinaPCBOne Technology LTD. is the author of this article on pcb assembly. Find more information, about PCB prototype.

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