Engineers have discovered that when compressed air passes through a high-voltage arc, gas molecules are “torn” into charged particles, forming the fourth state of matter – plasma.

This visual language, composed of lines, symbols and numbers, can accurately describe the shape, size, material and more than 200 technical parameters of an object.

Product lifecycle is never a multiple choice question, just like when Nokia’s feature phone was in decline, while Apple’s smartphone was exploding. The real masters are doing “time arbitrage” – cultivating the next growth point in the maturity of existing products. Remember: there is no such thing as a bestseller forever, only an evolving product can bring more rewards.

When you buy climbing ropes online, have you ever noticed the “22kN tensile strength” label on the package? This seemingly simple number has reduced rock climbing accidents in Yosemite National Park by 47%. Today, we will discuss the key mechanical index of tensile strength.

This article has no formulas, no difficult sentences or complicated theories, only easy-to-understand explanations and examples. If you are a beginner, then you can easily understand the strain stress curve; if you are an expert, this article is likely to bring you more new ideas. Let’s get started below!