fluxion

n.

流动；不断的变化；转变；飞跑

1. I buy that book from fluxion packman.
   我从流动小贩那里买到了那本书。
2. There are many foreigners in Shanghai, so the fluxion of population is very large.
   在上海有很多外地人，所以上海人口流动很大。

Dolomitization by Seepage Refluxion
Fluxionality and low‐lying transition structures of the water trimer
Erratum: Fluxionality and low‐lying transition structures of the water trimer [J. Chem. Phys. 99, 5228 (1993)]
Suppression of axial methionine fluxion in Hydrogenobacter thermophilus Gln64Asn cytochrome c552.
Apparent fluxionality in diethyl(triethylphosphine)platinum(II), a coordinatively unsaturated intermediate in .beta.-hydride elimina...
BPh as a Ligand in Cationic Zirconium Complexes: Novel Bonding Mode and Fluxionality
Tridentate Carbene CCC and CNC Pincer Palladium(II) Complexes:  Structure, Fluxionality, and Catalytic Activity
[o-Phenylenebis(dimethylarsine)]heptacarbonyldiiron. Preparation, crystal structure, and fluxionality in solution
Syntheses, structures, and fluxionality of blue luminescent zinc(II) complexes: Zn(2,2',2"-tpa)Cl2, Zn(2,2',2"-tpa)2(O2CCF3)2, and Z...
The Mechanism of Acetylene Cyclotrimerization Catalyzed by the fac-IrP3+ Fragment: The Relationship between Fluxionality and Catalysis