采用剪切球座配合接头，能够确保投球从地面投放或送入到位；

Shear sleeve adapter allows ball to be run in place or dropped from surface;

youdao

采用剪切球座配合接头，能够确保投球从地面投放或送入到位；

Shear sleeve adapter allows ball to be run in place or dropped from surface;

youdao