synchronism
(1)同步性
(2)声画同步，口型吻合(电影)
(3)同期性

• lanscape lens
• lantern
• lanthanide
• lanthanide elements
• lanthanum
• lanthanum beryllate laser
• lanthanum crown glass
• lanthanum flint glass
• lanthanum fluoride
• lanthanum fluoride active medium
• lanthanum glass
• lanthanum oxysulfide laser
• lanthanum titanate
• lanthanum titanate single crystal
• Lanthar lens
• lanuchvehicel
• Lanu montonic scattering
• laparoscope
• lap joint
• Laplace transform
• Laplacian edge enhancement
• Laplacian operator
• lapping
• lapping machine
• lapping plate