van
/vælv//vælv/The word "valve" originally comes from the Latin word "valva," which means "flap" or "door." This Latin word itself can be traced back to the Proto-Indo-European root "kwel-, kvelh-, keul-, kuol-," which means "to shut, stop, or cover." In the 17th century, the term "valve" was first used in connection with anatomical structures in the human body, such as the heart and lungs. These structures were compared to doors that controlled the flow of fluids or gases. In the late 19th century, the word "valve" began to be used more generally to refer to mechanical devices that regulate the flow of liquids or gases, such as the check valves and throttle valves used in plumbing and engineering. Today, the term "valve" is widely used in various scientific, technical, and industrial fields, including chemistry, physics, electronics, and biology, to describe a wide range of devices and mechanisms that perform similar functions to the ones originally associated with the flaps and doors in the human body.
a device for controlling the flow of a liquid or gas, letting it move in one direction only
một thiết bị để kiểm soát dòng chảy của chất lỏng hoặc khí, chỉ cho phép nó di chuyển theo một hướng
Thợ sửa ống nước sẽ lắp một số van an toàn mới.
Bạn cần những công cụ đặc biệt để mở van.
a structure in the heart or in a vein that lets blood flow in one direction only
một cấu trúc trong tim hoặc trong tĩnh mạch chỉ cho phép máu chảy theo một hướng
a device in some brass musical instruments for changing the note
một thiết bị trong một số nhạc cụ bằng đồng để thay đổi nốt nhạc
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