Bevel (english) Angle formed between the prepared edge of the end of tube and a plane perpendicular to the surface. Standard pipe bevel is 30 degrees.
Degree of Freedom: (english) A displacement quantity which defines the shape and location of an object. In the two dimensional plane, a rigid object has three degrees of freedom: two translations and one rotation. In three dimensional space, a rigid object has six degrees of freedom (three translations and three rotations).
Normal stress: (english) Stress acting perpendicular to an imaginary plane cutting through an object. Normal stress has two senses: compression and tension. Normal stress is often simply called stress.
Shear stress: (english) Stress acting parallel to an imaginary plane cut through an object.
Plane of Weakness (Concrete Engineering) The plane along which a structure under stress will tend to fracture; may exist because of the nature of the structure and its loading, by accident, or by design.
banding plane กบรางไสไม้
bead plane กบบัว สำหรับใช้ไสทำลวดลายบนไม้
border plane กบไสไม้ชนิดหนึ่งใช้ลอกบัวขอบ หรือเซาะร่องตามแนวขอบ เรียกว่า กบคิ้ว
circular plane กบไสไม้ที่มีใบกบโค้ง ใช้ไสแต่งลวดบัวหรือผิวที่โค้ง
compass plane กบใช้ไสแต่งผิวโค้ง
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