fan-shaped crown sheave 扇形天车轮
Reeve the 1 inch Manila rope through the first crown sheave.
把棕绳穿过天车上的第一个滑轮。
Pull the 1 inch Manila rope inside the derrick and feed and reeve through the first crown sheave.
把一寸的棕绳穿过天车上的第一个滑轮，在井架内拉该棕绳。
From the crown sheave, manually pull and reeve the 1 inch Manila rope through the first sheave of the traveling block.
用人力把棕绳从天车轮上拉过来，再穿过第一个游车轮。
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