在标准蜗杆传动中,当蜗杆为主动时,若蜗杆头数z1和模数m一定时,而增大直径系数q,则蜗杆刚度________;若增大导程角γ,则传动效率________。
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WhileIwasworkinginafast-foodrestaurant,Iconstantlydreamtofbeingabletoownone ( ).
A. finally
B. atlast
C. somedays
D. someday
Itiswonderfultoseeflowers () afteralongbleakwinter.
A. grow
B. bloom
C. blink
D. wither
Nutrition,sufficientsleep,andexerciseareimportantforchildren's ( ).
A. body
B. brain
C. growth
D. memory
Hecan't () thenoisedownstairsanymore, it's too loudy.
A. endure
B. keep
C. listen to
D. make