Related to Pole telephone:Utility pole A name sometimes applied to the telephone most commonly used before the introduction of the dial phone. The pole phone had a flat circular base a few inches in diameter supporting a vertical cylindrical column an inch or so in diameter and about a foot ...
The wire locking portion 3 is provided at both ends in the diameter direction of the utility pole restraining portion (annular band) 2. A wire is engaged with the wire engaging portion 3 via a hook or the like. The wire locking portion 3 has a turning mechanism. The turning mechanism ...
radio wave dish-type antennasRadio wave dish-type antennas, varying in diameter from 8 to 30 metres (26 to 98 feet), serving an Earth station in a satellite communications network. (more) Long-distance transmission also has been provided by radio link in the form of point-to-point microwave...
The base portion 3 of the field piece member I is provided with two holes (not shown) in which the rear ends of two cores I are secured. To enable the cores to be secured to the base portion 3, the rear ends of the cores are reduced in diameter where they extend through the holes...
line loss increases with line length and attenuation increases with increasing frequency and decreases as wire diameter increases. If the telephone loop is too long, then transmission of DSL signals at high data rates from the CO to the subscriber's termination location and vice-versa may not be...
than 40mm, not less than 20 times of the outer diameter when the outer diameter is larger than 40mm. 4.Usage:Transmitting audio frequency signals , analog signals up to 150kHz or digital signals up to 2048 kbit/s and in certain conditions , it ...
20 times of the outer diameter when the outer diameter is larger than 40mm. 4.Usage: Transmitting audio frequency signals , analog signals up to 150kHz or digital signals up to 2048kbit/s and in certain conditions , it can carry di...
Wear mechanism and life prediction of the ripper in a 9-m-diameter shield machine tunneling project of the Beijing new airport line in a sand-pebble stratum The wear of the 190-rippers was divided into five categories: pedestal wear, ripper teeth collapse,uniform wear, ripper teeth falling off...
3127 Keystone Nylon 0.312 inch Diameter Flat Washer for #8 Screw 4725000起订 5000+10000+20000+25000+75000+ ￥0.41￥0.4￥0.4￥0.4￥0.38 1-2周 询价 1271 Keystone Bright Brass .187 inch Tab Quick-Fit Terminal 13450起订 50+150+400+1000+2500+ ￥2.43￥2.37￥2.33￥2.29￥2.19 1-2周 购买 SD12...
Cable Code Number of Pairs Insulation Material Nominal Insulation Thickness mm Minimum Sheath Thickness mm Min/Max Overall Diameter mm Nominal Weight kg/km 0.5mm Conductor TP1411-2Y2Y-2P05-DW10B 2 PE 0.2 0.4 5.1/5.6 32 TP1417-2Y2Y-4P05-DW55M 4 PE 0.2 0.5 5.3/5.5 ...