Correct
梯队
/ tīduì /
Strokes
Definition
echelon (military)/(of an organisation) group of persons of one level or grade
Example
As a Noun
echelon (formation)
1
Tīduì
梯队
zhènliè
阵列
echelon
2
Chéng
成
tīduì
梯队
fēixíng
飞行
fly in echelon (formation)
As a Noun
group of persons of one level or grade in an organization, kept for use when needed
3
Xíngchéng
形成
réncái
人才
tīduì
梯队
form an echelon of qualified personnel