| plant-mixed concrete | คอนกรีตผสมเสร็จ |
| principal planes | ระนาบหลัก (ระนาบที่มีเฉพาะหน่วยแรงตั้งฉากกระทำ ปราศจากหน่วยแรงเฉือน) |
| rupture plane | ระนาบวิบัติ |
| tangent plane | ระนาบสัมผัส |
| 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. |
| Autotrophs | (Environmental Engineering) A group of organisms capable of obtaining carbon for synthesis from inorganic carbon sources such as carbon dioxide and its dissolved species (the carbonates). This group includes plants and algae. |
| Global warming | (Environmental Engineering) The long-term warming of the plant due to increases in greenhouse gases which trap reflected light preventing it from exiting to space. |