spike
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- singing split
 - electronic probe sensor
 - down stroke,undershoot
 - prosenchymatous cell
 - ricing
 - wood crib
 - dynamite paper
 - button specks
 - abrasive
 - protective paper
 - linear sweep
 - settling off
 - streww-strain tester
 - buff (ing) paper
 - cheese roll
 - water absorption test
 - dandy marks,dandy worm
 - florist crepe paper
 - pulp purification
 - setting mortar