First, word formation
1, saw
Metal cutting tools are mainly composed of saw blades and saw bows. The saw blade is a cutting blade, and the saw bow is a tool to support and guide the saw blade. Saws are often used in metalworking, carpentry and other fields, and can cut various metals, wood and other materials quickly and accurately.
2. Chain saw
Power tools have the characteristics of high speed, high efficiency and high power. A chainsaw is mainly composed of a motor, a saw blade and a housing, wherein the motor is the power source, the saw blade is the cutting blade, and the housing is an important part for protecting the chainsaw.
3. Hand saw
Hand tools suitable for small-scale cutting and fine work. A hand saw is mainly composed of a saw blade and a handle. The saw blade is a cutting blade, and the handle is a tool mastered by the operator. Hand saws are often used in small woodworking, carving and other fields, which can provide accurate and meticulous cutting results.
Second, the source
1, the word saw can be traced back to Shang Dynasty in China. In Oracle Bone Inscriptions, it is shaped like a saw, with a saw blade in the middle and hands on both sides, indicating that things are being sawed with a saw. The source of this word may be a vivid description of the use of saws in life.
2. In the Jin Dynasty, the shape of the saw changed, but the basic shape of the saw remained. In the period of Xiao Zhuan, the saw characters were further standardized and the shapes became clearer and clearer.
Examples of saw words
1. Saws can be traced back to ancient times. This is a tool for cutting wood. With the passage of time, the shape and use of saws have been constantly evolving, and now it has become an indispensable tool in industrial production and home DIY.
Saw is widely used in woodworking industry. Skilled carpenters can cut boards into required shapes and sizes by pulling the saw to move back and forth. Saw can not only cut straight lines, but also bend and cut as needed to make more complicated shapes.
Besides woodworking, saws are widely used in construction, mining and rescue. On the construction site, saws can be used to cut materials such as steel bars and angle irons. In mining, saws can be used to cut hard materials such as stone and concrete. In rescue work, saws can be used to cut obstacles that hinder rescue, such as car shells and steel bars.
Besides metal and wood, saws can also be used to cut other materials, such as glass, ceramics and precious stones. In the jewelry industry, saws are usually used to cut precious materials such as gems and jade. In the process of cutting, very fine operation and exquisite skills are needed to ensure high-quality cutting effect.