MACADAM MAIN GIRDER

MACADAM Macadam

Materials

Stones and bitumen mixture that mostly constitutes a pavement or a sidewalk surfacing.

MACHINE TROWEL H licopt re

Equipment and Tools

Syn. with HELICOPTER; POWER FLOAT; ROTARY FLOAT

MACHINING Usinage

Metal Construction

The metalwork is generally produced in factory. In general terms, we can distinguish the machining by:

• formation of shavings (sawing, drilling, etc.),

• mechanical cut (shearing, melting, etc.),

• deformation of metal (folding, bending, forging, etc.).

Syn. with TOOLING

MACHINIST Machiniste

Work

A worker that works under lance holder and which is in charge of the supplying, the starting and adjustments of an air-placing machine.

MACLE Macie

Geology

The association of two or several crystals of the same nature in a given way. Macles mostly meet in the minerals such as the gypsum or quartz. Syn. with TWIN CRYSTAL

MACROCONGELIFRACTION Macrog livation

Geomorphology

The cutting up of the limestone into large blocks by the frost effect.

MACROGRAPHER Macrographe

Test of Materials

A specialist in macrographic examinations.

MACROGRAPHY Macrographie

Metallography

1. The analysis and observational science of the structure of metals carried out to the naked eye or magnifying glass.

2. The representation of a metal piece with all its visible details to the naked eye or magnifying glass.

MACROMOLECULAR MATERIAL Mat riau macromol culaire

Polymers

A product combining a macromolecular substance with various other substances such as extenders, admixtures, etc. Macromolecular substances, also called polymers or high polymers are classified into three categories:

• natural ( les naturelles), organic (natural rubber, etc.) or mineral (various silicates, etc.);

• artificial