keyed file file access system

FDFS File Descriptor File System

file allocation table file system FAT

file to file

file usage file

tape file-to-tape file transfer

[2+2] Cyclic addition

1# addition

1, 2--addition reaction

2-addition

4-addition

4-Conjugate Addition

A standard addition method for differential spectrophotometry

Accurate Ball-Load-Addition Method

Acid Addition

acid addition water treatment formation

active addition

active addition agent

actual addition amount