tightens

v.

make tight or tighter

同义词：fasten

become tight or tighter

"The rope tightened"

restrict

同义词：stiffentighten upconstrain

narrow or limit

同义词：reduce

Induced-fit tightens pleuromutilins binding to ribosomes and remote interactions enable their selectivity
California Tightens Standard for Independent Contractor Classification
Virginia tightens abortion rules.(POLICY & PRACTICE)
BICEP2 / Keck Array VI: Improved Constraints On Cosmology and Foregrounds When Adding 95 GHz Data From Keck Array
A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND DAMPING TAIL FROM THE 2500-SQUARE-DEGREE SPT-SZ SURVEY
Chest compression apparatus for cardiac arrest
Cosmological parameters from SDSS and WMAP
CLATHRIN-COATED VESICLE FORMATION AND PROTEIN SORTING:An Integrated Process
Structural Realism after the Cold War
COSMOS: Three-dimensional Weak Lensing and the Growth of StructureBased on observations with the NASA/ESA Hubble Space Telescope , o...