例句與造句

1. This database provides access to the chemical content within the " Chemisches Zentralblatt " by performing chemical structure and substructure searches.
2. There is no single definition of molecular similarity, however the concept may be defined according to the application and is often described as an MCS ) based substructure search
3. The database has seen 5 major releases since its launch in 2007, which coincided with expansion of phylogenetic coverage ( e . g . inclusion of helminth genomes in release 2 ), incorporation of new functionalities ( e . g . chemical similarity and substructure searches in release 4 ), and / or major data updates to keep the database in sync with upstream data providers.
4. It's difficult to find substructure search in a sentence. 用substructure search造句挺難的