ppn
英 ['pi:p'i:'en] 美 ['pip'i'en]

abbr.

precipitation 降水；沉淀；雨量；proportion 比例

权威例句

Targeting human PPN: few patients, numerous disputes
Seasonal variations of PAN, PPN, and O 3 at the upper Midwest PROPHET site
A method for the airborne measurement of PAN, PPN, and MPAN
Ambient Levels of the Peroxyacyl Nitrates PAN, PPN and MPAN in Atlanta, Georgia
Coupling Reactions of CO2 with Neat Epoxides Catalyzed by PPN Salts to Yield Cyclic Carbonates
Measurements of PAN, PPN, and MPAN made during the 1994 and 1995 Nashville Intensives of the Southern Oxidant Study: Implications fo...
Synthesis of 12-metal clusters based on the ([Mo6Cl8]4+) core. X-ray structure of (PPN)2[Mo6Cli8{(.mu.-NC)Mn(CO)2Cp}a6]
CONSERVATION LAWS AND PREFERRED FRAMES IN RELATIVISTIC GRAVITY. I. PREFERRED-FRAME THEORIES AND AN EXTENDED PPN FORMALISM.
THEORETICAL FRAMEWORKS FOR TESTING RELATIVISTIC GRAVITY. III. CONSERVATION LAWS, LORENTZ INVARIANCE, AND VALUES OF THE PPN PARAMETERS.
Molecular models of the superconducting chevrel phases: syntheses and structures of [Mo6X8(PEt3)6] and [PPN][Mo6X8(PEt3)6] (X = S, S...