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Revealed O
the O
location-specific O
flow B-CONPRI
patterns E-CONPRI
and O
quantified O
the O
speeds O
of O
various O
types O
of O
flow O
. O
Reconstructed O
three-dimensional S-CONPRI
flow B-CONPRI
pattern E-CONPRI
under O
both O
conduction-mode O
melting S-MANP
and O
depression-mode O
melting S-MANP
. O
Experimentally O
analyzed O
the O
prevailing O
physical B-CONPRI
processes E-CONPRI
at O
different O
locations O
in O
the O
melt B-MATE
pool E-MATE
. O
Melt B-CONPRI
flow E-CONPRI
plays O
a O
critical O
role O
in O
laser B-MANP
metal I-MANP
additive I-MANP
manufacturing E-MANP
, O
yet O
the O
melt B-CONPRI
flow E-CONPRI
behavior O
within O
the O
melt B-MATE
pool E-MATE
has O
never O
been O
explicitly O
presented O
. O
Here O
, O
we O
report O
in-situ S-CONPRI
characterization O
of O
melt-flow B-CONPRI
dynamics E-CONPRI
in O
every O
location O
of O
the O
entire O
melt B-MATE
pool E-MATE
in O
laser B-MANP
metal I-MANP
additive I-MANP
manufacturing E-MANP
by O
populous O