The meaning of the word wave
1, wave and water fluctuation phenomenon. For example, when the waves come, rows of blue waves, with white garlands, are washed to the shore by the wind, becoming more and more fierce. I quickly closed my eyes and jumped up in a hurry. As soon as I landed, a wave "scratched" my head and the spray splashed everywhere.
Summer is coming, and the golden waves are turning in the wheat fields. Flowers are blowing in the green leaves, and night falls. The stars are shining all over the sky, and there are melodious frogs in the distance. People sat around the old elm tree, talking about the good times and praising Jue's policy of benefiting the people.
2. Metaphor things happen unexpected changes. For example, the sparkling waves on the sea are like the gentle cradle of mother, and the waves rise again and again, endlessly. The waves roared and rolled in, one after another, overlapping, white waves surging, and white flowers blooming in the sea.
3. Calligraphy refers to twists and turns. When you use a pen, you can weigh the waves. Every point and every painting has three turns, and each wave blows three folds. In other words, each stroke includes three steps: starting, writing and receiving. This is called three turns, and each stroke has to be folded three times. This is called twists and turns. Three twists and turns, that is, you have to change the nib three times to write. After thirty percent off, the strokes are vigorous.
4. Also called "fluctuation". The process of vibration propagation. Is a form of energy transfer, the most common are mechanical waves (such as water waves, sound waves) and electromagnetic waves. According to the relationship between wave propagation direction and vibration direction, it can be divided into longitudinal wave and transverse wave. For example, under this condition, conventional extraction, direct ultrasonic extraction and indirect ultrasonic extraction were further carried out, and it was concluded that indirect ultrasonic extraction of inulin was an effective method.
Ultrasonic waves have great penetration ability to liquids and solids, especially in solids with opaque sunlight, which can penetrate to a depth of tens of meters.