2 atrioventricular block and complete atrioventricular block

Block 36 and Block 38 in Oman

Block Xia 502 and Block Xia 509

a point of safe return

agro-machinery safe village

always safe geometry

automatic safe controller

available safe egress time

available safe evacuation time

benifit from safe operation

beyond safe limit

buckling safe factor

canal safe transit system

capital safe

cave roof safe thickness

check safe coefficient

China Alliance for Safe Injection

clean and safe water

Code of Practice for Safe Use of Lifts and Escalators