當一顆行星經過某個相位的精確度數時，便使用「傳遞」（transmission）一詞。此時，該相位會形成一條兩側完全對稱的幾何線。
例如，假設太陽位於牡羊座19度，而土星向前移動，越過對分相的精確度數，進入天秤座20度。
The term transmission is utilized whenever a planet passes by the exact degree of an angle, at which point that angle is creating a geometric line that is exactly even on both sides. For example, if the sun is at 19 degrees of Aries, and Saturn advances past the degree of the opposition into 20 degrees of Libra.