Does laser welding need argon?

The most widely used shielding gases for laser welding of steels are helium and argon. Helium produces significantly more penetration than argon in penetration‐mode laser beam welding. Another gas that has been proposed as an alternative to these inert gases is carbon dioxide.battery laser welding machine

What is…

How many 5 stars are there to get rid of one star?

It depends on valuations, which are sums of any type. What you have is if one 1 star and five stars are 50% ratings. Get another 5 stars and you'll move up to 66%. To reach 80%, you will need 4 5 stars. 90% take 9 5 stars.

How to recover from useful content updates?

In short, to recover from useful content updates, remove any ads that interfere with the view of your content. 2. Writing to the first person can prevent…

Does work at night?

Photographers most often shoot infrared during sunny days to catch the maximum infrared light from the sun. However, the sun is not the only source of infrared light, and it is also possible to practice at night within several parameters.

Which phones have thermal camera?

The CAT® S62 Pro Thermal Imaging Smartphone is a durable, infrared-imaging android phone ideal for locating and diagnosing damp, draught, leaks, hotspots, electrical shorts,…

胎兒多大不好生?

產道較寬,骨盆軟組織有彈性



吳文毅主任認為,160公分以上就算較高的人,而不到150公分的人,骨盆較小,順產的機率比高的人較低,體重控制更加重要. 如果體重又沒控制好,容易產程遲滯,至於150-160公分的人則算是中等,仍可能可以順產.

What is the word for having no kids?

There is the word nulliparous, which is a medical term for not having children (whether by choice or by infertility). Wordnik defines the adjective as: nulliparous (adj.) Of the condition of a nullipara.

What does "onboard for delivery" mean?

On Board for Delivery. Freight item is…