n. 心轴

[医] 轴柄

[ noun ]
any of various rotating shafts that serve as axes for larger rotating parts
<noun.artifact>

Mandrel \Man"drel\, n. [F. mandrin, prob. through (assumed) LL.
mamphurinum, fr. L. mamphur a bow drill.] (Mach.)
(a) A bar of metal inserted in the work to shape it, or to
hold it, as in a lathe, during the process of
manufacture; an arbor.
(b) The live spindle of a turning lathe; the revolving arbor
of a circular saw. It is usually driven by a pulley.
[Written also {manderil} and {mandril}.]

{Mandrel lathe}, a lathe with a stout spindle, adapted esp.
for chucking, as for forming hollow articles by turning or
spinning.

mandril \mandril\ n.
any of various shafts that rotate or serve as axes for larger
rotating parts. [Written also {manderil} and {mandrel}.]

Syn: spindle, mandrel, arbor.
[WordNet 1.5]