silica gel - sliplining
- single-panel gate
- single-panel loading
- single-pass heat exchanger
- single-pass heating coil
- single-phase railroad
- single-pipe
- single-pipe heat-supply system
- single-pipe heating system
- single-pitch roof
- single-point adjustable suspension scaffold
- single-point adjustable suspension scaffolds
- single-point heater
- single-pull switch
- single-purpose
- single-purpose road
- single-purpose use
- single-ram booster
- single-ram intensifier
- single-rope-type grab bucket
- single-runway airfield
- single-sashed window
- single-seat control valve
- single-shaft mixer
- single-sheave block
- single-sheaved block
- single-shot booster
- single-sized aggregate
- single-slope beam
- single-span
- single-spindle lathe
- single-spot weld
- single-stack plumbing system
- single-stage
- single-stage compressor
- single-stage crusher
- single-stage curing
- single-stage design work
- single-stage pump
- single-stage system
- single-start thread