In the Siege of Gondor, hateful orcs are "digging, digging lines of deep trenches in a huge ring," while others maneuver "great engines for the casting of missiles."
Below Titan, near the ring plane and to the left is the moon Mimas, casting a muchs maller shadow onto Saturn's equatorial cloud tops.
泰坦左下靠近土星光环的是土卫一弥玛斯，在土星赤道云层上投下小得多的投影。
3
Three kinds of injection sleeves construction, materials, surface treatment and application ranges of floating end face seal ring by die casting are expounded.