hollow beam

prestressed hollow beam "angling" the word gin pole lifting techniques and methods are described and summarized.

The phenomenon of hollow beam emerged by conical refraction from biaxial crystal , have been noticed in the early nineteenth century.

The propagation characteristics and the singularity effect of a hollow beam are studied in the third, forth and fifth chapters.

Using the synthesized gratings with different orders, hollow beam of different sizes is obtained.

the generation of a localized hollow beam by a radial-distributed phase plate and its applications in laser cooling and trapping of atoms;

Pre-tension performance analysis and section optimum design research for the prestressed hollow beam,

The construction and quantity control of pre-stressed hollow beam of the northern of second circle Freeway

Analysis on the cracks in pretensioned prestressed hollow beam and treatment measures

Precasting Technique and Quality Control for Prestressed Hollow Beam of Tongli Bridge

Study on the causes of cracks on the end of prestressed hollow beam

The construction of large-span prestressed hollow beam

Production of Hollow beam by Dislocation Grating with LCD

The Experimental on Complex Fibre of Fibrwrap Strengthened the Hollow Beam Bridge

A method of acquiring a dark hollow beam of nanometer level

Nowadays, these light beams are divided into two kinds: one is hollow beam, such as Laguerre-Gaussian beam and high-order Bessel beam;