four-leaf clover

n.

四叶苜蓿（传说中可为发现者带来幸运）；

Four leaf clover
Four-Leaf Clover
Four leaf clover
Four-leaf-clover-shaped antenna for a THz photomixer
Self-assembly of (P)-heterohelicenediol into a four-leaf clover motif
Nanowire Terahertz detectors with a resonant four-leaf-clover-shaped antenna.
Four-leaf-clover-shaped EBG structure to improve the H/E field ratio of stripline coil for 7 Tesla MRI
Four-leaf clover qRT-PCR: A convenient method for selective quantification of mature transfer RNA.
Four-leaf clover-shaped antenna on an extended hemispherical lens for a high-output-power THz photomixer
Variety of four-leaf clover and a method for breeding the same
The Four-Leaf Clover of Human Resources
Quadricuspid aortic valve: the four-leaf clover discovered by cardiac MRI.
The "Four-Leaf Clover"Treatment Algorithm: A Practical Approach to Manage Disorders of the Distal Radioulnar Joint