??? ???? tricone ????? ?? ??? ???????? ?? ????? ?????? ??? ????? ???? ?? ??????? ????? ?????? ???????? ???? ???? ??????. ??? ??? ?????? ???????? ??? ????? ????? ????? ??????? ???? ????? ??? ?????? ?? ??? ???? ?? ?????? ????? ???????.

???? ?? ????? ?? tricone? ?? ???? ???? ???????? ???? ???? ???????? ?? ??? ???????? ??? ?????? ???? ???? ????????? ???????? ???????? ?????? ??? ????????? ?????.

??? ?? Tricone

?????? ??? ???? ??? ???? ?????

??? ?????? ???? ????????? ???? ?????? ????? ????? ?? ?????? ????? ??? ??? ??????? ???????? ????? ??? ??????? ???. ???? ??? ????????? ??????? ?????? ???????? ??????? ?? ???? ?? ?????? ????????? ??????? ?????? ????? ???? ????. ????? ?????? ??? ???? ??? ???? ?????? ?????? ?????? ?????? ????? ?? ???? ?????? ????? ????? ?????? ???? ?????.

?????? ????? ?. ???? ????.

?? ?????? ???? ???????? ?????? ????? ?? ???? ???? ?? ??? 1933. ???? ????? ??? ??? ????? ?????? ??????? ??????? ?????? ???????? ?????? ???? ????? ?????? ??????? ?? ??? 1909. ??? ???? ?? ????? ??????? ?????? ????? ?????? ???????? ??? ??????? ????? ??????? ?????.

??? ???? ?????? ?? ???? Hughes Tool Company ?? ????? ???????? ??? ??????? ????? ?????? ???? tricone. ????? ???? ????? ??????? ??? ?????? ?????? ?????? ??? ??? ???? ???? ????? ????? ?? ???? ????? ?????? ?? ???? ??????? ?? ??? ??????. ??? ???????? ?????? ???? ????? ??? ????? ?? ???? ??????? ??????? ????? ?? ???? ????? ??????.

????? ?????? ??? 1933 ????????

?? ??? 1933? ???? ???? Hughes Tool Company ??? ????? ?????? ???? tricone? ??? ??? ??? ????? ??????? ????? ????? ?? ????? ????? ?????. ????? ????? ???????? ?????? ???????? ??? ????? ????? ?? ?????? ??? ?? ????? ????????? ?? ????? ??????? ??? ??????.

???? ????? ??? tricone ???? ?? ????? ?????? ??? ??? ??????? ?????? ????? ?????? ??????? ?????? ?????? ??? ?????? ?? ????????? ?????????? ????????.

??? ???? ?? Tricone

????? ????? ???????

??? ??? ??? ????? ???????? ???? ???? ????? ??? ??????? ???? ???? ?????? ????? ??????? ??? ????? ??????? ?????? ?? ??????? ????????:

• ??? ?????? ???? ???? ?????: ???? ??????? ????? ??????? ?? ???? ?????? ?????? ?????? ?????? ???? ???????.

• ????? ???? ?????: ???? ??? ??? ????? ?????? ??????? ?????? ??? ??????.

• ????? ???? ?????: ?????? ?? ???? ????? ???? ?????? ???? ?? ???? ????????? ??????? ??????.

????? ?? Tricone

???? ????? ??????? ?? ??? ????????? ?? ????? ???? ????? ??? ?????:

1. ???? Tricone ??? ??????? ????????:

• ?????? ????????? ??????? ??? ????? ?????? ?????? ?????? ?????? ??????.

• ????? ?????? ???? ???? ?????? ??????.

2. ????? ????? ???????? (TCI) ?? Tricone:

• ????? ????????? ?????? ?????? ??? ?? ??? ???????? ????????.

• ????? ???????? ????? ????????? ????? ???? ????? ???? ?? ??????? ??????? ??????.

???? ??? ?????????? ???????? ???????? ??????? ??? tricone ?????? ?????? ????????? ?????????? ???????.

???? ????? Tricone Bit

?????? ?? ?????? ?????????

??? ????????? ???? ?? tricone ?????? ?? ?????????. ?? ????? ??????? ??????? ?? ??????? ???????? ??? ????????? ??????? ?????? ????? ????? ????? ??????? ????? ???????? ?????? ???????. ????? ??? ????????? ???????? ???????? ????? ???????? ????? ????? ???????.

????? ?????? ????? ?????? ????? ??????

???? ??? tricone ??????? ?? ??????? ???? ?????? ????? ?????:

• ?????? ???? ?? Tricone:

• ????? ??????? ????? ??????.

• ??? ??? ??????? ???? ?????? ?????? ???????? ???????.

• ??? ?? Tricone ????:

• ?????? ???????? ????? ??????.

• ???? ????? ??????? ???????? ?? ???? ????? ??????? ????????.

?????? ???????? ??? ??? ???????? ??? ??? ????? ????? ??????? ???????.

??????? ?????? ??? Tricone

????? ????? ????? ??????

?? ???? ???? tricone ??? ????? ??? ????????? ??????? ???????? ?????? ???? ????? ?????? ?? ???? ??????? ?? ????? ??????. ??? ???? ????? ????? ?? ?????? ??? ?????? ????? ???? ????? ?????? ???? ?? ??? ?? ?????? ?????? ????? ?? ??????.

????????? ?? ??????? ???? ???? ??????

??????? ?? ????? ?????? ??? ???? tricone ????? ????? ???? ???:

• ???????: ????? ??????? ?? ??????? ??????? ??????? ?? ????????? ??????? ??????.

• ??? ???? ??????: ????? ????? ?????? ?????? ??????? ??????? ????????? ?? ???? ????? ??????.

??? ????? ??? ???????? ?? ????? ?????? ??????? ???????? ?????? ??????? ??????? ??????? ???????.

?????

?????? ?? ????? ??? tricone ???? ?????? Howard R. Hughes Sr. ?? ??? 1933 ???? ?? ????????? ?????. ???? ?????? ????? ???????? ??????? ???????? ?????? ??? ??????? ????? ?? ???? ????? ???????? ??? ??? ??? ????? ?????? ??? ???? ????? ?????? ???????? ???????.

??? ?? ??????? ??? ???????? ???????? ?? ?????? ???????? ??? ????? ????? ????? ??? tricone? ??? ???? ?????? ?? ??????? ????? ???????. ??????? ????? ????? ??? ShengDe ????? ????????? ???? tricone ????????? ??? ???? ?????? ?????? ?????? ????? ????????.

?????? ????? ??? ??????? ??? ???? tricone ????? ???????? ???????? ??? ???? ??? ??????? ?????? ??? ??? ???? ???????? ??????????.