Definition EN: the part of the shoegear making contact with the contact rail

Definition EN: the separate device that provides electrical connections between pins of the tube base and the external wiring,keeping the tube easily removable

Definition EN: that part of a lamp which holds it in a lampholder and usually provides connection to the electric supply

Definition EN: A large rock unit unconformably underlying cover rocks of contrasting tectonic style and with generally less intense or no metamorphism and deformation.In italian "zoccolo" is often use d in the western Alps.

Definition EN: that part of a lamp which holds it in a lampholder and usually provides connection to the electric supply

Definition EN: that part of a lamp which holds it in a lampholder and usually provides connection to the electric supply

Definition EN: the fixed or stationary half of a connection that is mounted on a panel/bulkhead

Definition EN: a plastic and spring-metal socket for assembly with printed-circuit board components,enabling transistors,integrated circuits and other semiconductor devices to be inserted and removed at will

Definition EN: the deformed area of a lead which extends beyond the dimensions of the lead prior to bonding

Definition EN: the stream of air discharged aft by a rotating propeller

Definition EN: the area on the surface of the Earth within which the antenna gain is at least equal to a specific value,usually-3dB,relative to its maximum gain

Definition EN: the central portion of the disk between the finishing groove and the centre hole

Definition EN: the portion of the recorded surface where the groove pitch has been increased to mark the separation of two successive bands of recording

Definition EN: a region of a crystal in which a high order of crystal defects occurs,so that it can no longer be said to have the original lattice structure

Definition ES: zona de un embalse comprendido entre el nivel más alto admitido para su explotación normal y el máximo nivel de agua posible

Definition EN: the storage volume of a reservoir that exists between the highest level normally allowable in its working and the maximum possible water level; alternatively the area over which such maximum possible water level would extend

Definition EN: the portion of the surface of a disk containing modulation

Definition EN: the central portion of the disk between the finishing groove and the centre hole

Definition EN: a disturbance of relatively short duration but longer than a specified value when measured under specified conditions

Definition EN: unwanted roughly sinusoidal low-frequency deviation at frequencies related to that of the mains supply. Hum is determined under specified conditions (1); disturbance due to a signal from the mains, and showing itself in a line-by-line scanning system by an appearance of horizontal streaks or bands on the reproduced picture (2); unwanted audible modulation arising from the tube voltage supplies (3)

Definition EN: an unwanted audible modulation arising from the tube voltage supplies

Definition EN: an unwanted roughly sinusoidal low-frequency deviation at frequencies related to that of the mains supply