1.1 These methods cover procedures for planing, shaping, turning, mortising, boring, and sanding; all of which are common wood-working operations used in the manufacture of wood products. These tests apply, in different degrees, to two general classes of materials:

1.1.1 Wood in the form ...

1.1 This guide covers general procedures for the material selection and fabrication of reference blocks made of metal or metal alloys and intended to be used for the pulsed longitudinal wave ultrasonic examination of the same or similar production materials.

1.2 This guide covers the fabri...

As an important application research topic of the intelligent aviation multi-station, collaborative detecting must overcome the problem of scouting measurement with status of "fragmentation", and the NP-hardness problem of matching association between target and measurement in the process of scoutin...

This paper examines some basic propositions of the special relativity theory. A Gedanken experiment is proposed to disprove Einstein's light speed invariance; the 4-dimension invariant seems invalid because it is impossible for the time and spatial coordinate variables to be orthogonal, because of t...

This paper examines the use of 3D electronic medium as a tool for procuring detailed design information for the Sandridge Bridge Travellers project. The Sandridge Bridge Travellers project required the production of 10 7.5 m of tall × 5-12 m of wide figures under very tight programme a...