mechanically strong
1Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
2Bone — This article is about the skeletal organ. For other uses, see Bone (disambiguation) and Bones (disambiguation). For the tissue, see Osseous tissue. Drawing of a human femur Bones are rigid organs that constitute part of the endoskeleton of… …
3heartwood — /hahrt wood /, n. the hard central wood of the trunk of an exogenous tree; duramen. [1795 1805; HEART + WOOD1] * * * Dead, central wood of trees. Its cells usually contain tannins or other substances that make it dark and sometimes fragrant.… …
4Pebble bed reactor — Sketch of a pebble bed reactor in Italian …
5Geoffrey Pyke — Geoffrey Nathaniel Pyke (9 November 1893 ndash; 22 February 1948) was an English journalist; a spy and spy master; an educationalist and later an inventor whose clever, but unorthodox, ideas could be difficult to implement. In lifestyle and… …
6cave — cavelike, adj. /kayv/, n., v., caved, caving. n. 1. a hollow in the earth, esp. one opening more or less horizontally into a hill, mountain, etc. 2. a storage cellar, esp. for wine. 3. Eng. Hist. a secession, or a group of seceders, from a… …
7Nuclear electric rocket — In a nuclear electric rocket, nuclear thermal energy is changed into electrical energy that is used to power one of the electrical propulsion technologies. Technically the powerplant is nuclear, not the propulsion system, but the terminology is… …
8Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …
9Glass-ceramic — materials share many properties with both glass and more traditional crystalline ceramics. It is formed as a glass, and then made to crystallize partly by heat treatment. Unlike sintered ceramics, glass ceramics have no pores between crystals.… …
10Polybutylene terephthalate — (PBT) is a plastic that is used as an insulator in the electrical and electronics industries. It is a thermoplastic crystalline polymer, and a type of polyester. PBT is resistant to solvents, shrinks very little during forming, is mechanically… …
