海
底
扩
张
h
á
i
h
ǎ
i
d
ǐ
d
ǐ
k
u
ò
k
u
ò
z
h
ā
n
g
z
h
ā
n
g
Definitions
1. seafloor spreading (geology)
Components
海底
hǎi dǐ
–
seabed
扩张
kuò zhāng
–
expansion
Related Words
海底扩张说
hǎi dǐ kuò zhāng shuō
–
theory of seafloor spreading (geology)