导柱外表面自上而下呈与弧形内凸头配合的波浪状。
The outer surface of the guide post is in a wavy shape matched with the arc-shaped inner concave head form top to bottom.
施肥箱下方的下肥道内贯穿有控制杆，上端设有凸头，达接在施肥箱内的出口上。
A control lever runs through a lower fertilizer passage below the fertilization box, with the upper end provided with a raised head which reaches an exit inside the fertilization box.
该探针包括涡流线圈，以及支撑装置，该支撑装置用于承载 具有适于将涡流引入正好位于凸头紧固件之下的材料中的定向的所述线圈。
The probe comprises an eddy current coil and a support means for carrying the coil in an orientation suitable for introducing eddy currents into material directly beneath a raised-head fastener.
她粗壮的像根木桩，面颊深红，头平额凸，眼窝深陷而充满怀疑。
She was a stocky square-built woman with hard red cheeks, a flat top to her head, prominent brows and deep-set, suspicious eyes.
也许是因为他太努力工作了，所以他前额的头都凸了。
Maybe he works too hard, so the hair of his front head is bared.
根据矢状面上脊柱平衡的理念，颈椎和腰椎的前凸，胸椎和骶椎的后凸构成的交替曲线使头能够定位与躯体和骨盆的上方。
According to the concept of sagittal spinal balance, the alternating curves of cervical and lumbar lordosis and thoracic and sacral kyphosis enable the head to be positioned over the trunk and pelvis.
针对这种情况，研制出KDS— 115型液压丢手工具。 该型工具通过设置上接头与打捞头之间的凸爪凹槽结构，解决了以往丢手工具不能传递扭矩的问题；
Model KDS-115 hydraulic releasing tool is developed, which solves the problem of torque transfer by designing a claw-groove structure between the upper sub and fishing head.
此文介绍了连续挤压内凸筋口琴管模具的设计方法及其模具芯头的冷挤压加工。
This paper is about die tongue making: the design method and cold-press formation.
分析了挤压翻边与传统翻边应力状态的不同之处，以及翻边凸模的冲头曲率半径对翻边效果的影响。
The differences of stress state between extrusion-flanging and traditional flanging, and the influences of curvature radius of burring punch on flange height were analyzed.
该螺丝包括一螺头、一凸台及一螺杆。
Wherein the screw comprises a screw head, a lug boss and a screw rod.
切削头包括具有凹入部分(30)的伸出凸脊(28)。
The cutting head has a projecting ridge (28) with a recessed portion (30).
该凸台是设置在该螺头与该螺杆之间，其外周缘设有若干纵槽。
The lug boss is arranged between the screw head and the screw rod, and the external circumference of the lug boss is provided with a plurality of longitudinal grooves.
该凸台是设置在该螺头与该螺杆之间，其外周缘设有若干纵槽。
The lug boss is arranged between the screw head and the screw rod, and the external circumference of the lug boss is provided with a plurality of longitudinal grooves.
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