| 释义 |
synchronous timing synchronous timing[′siŋ·krə·nəs ′tīm·iŋ] (metallurgy) Regulating the welding-transformer primary current in spot, seam, or projection welding so that the following conditions prevail: the first half-cycle is initiated at the proper time in relation to the voltage to ensure a balanced current wave, each succeeding half-cycle is essentially the same as the first, and the last half-cycle is of the opposite polarity to the first. |