head check pulse 磁头检验脉冲
cylinder head check 缸盖检查
head check filter 邮件头检测
Head Check Sequence 头校验序列
check your head 敲敲你的头 ; 出自专辑 ; 唱片名
head end check valve 油缸头部单向阀
Check head line 牵制首榄
extra check cutter head 附加进刀架
Check to the head 头部冲撞
The mathematical model of hydraulic regime of ring-shaped heat-supply network is established, and the pressure head check formula for quota heating is given.
建立了环状管网水力工况的数学模型，给出限额供热的压头校核公式。
He poked his head around the corner to check that nobody was coming.
他从转角处探出头来，查看有没有人过来。
要检查我的头？
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