踏步试验的英文

• stepping test

• 踏步:    mark time
• 试验:    experiment; test; trial
• 初步试验:    early test; exploratory test; pilot test; pilottest; preliminary experiment; preliminary testing; preliminary trial; primary test; rough test; trial test
• 初步试验；筛选:    screening test
• 两步试验:    two stetest twostage testt