水暖安装中常用的一种管件。补心又称内外螺纹管接头，用于直线管路变径处。一般立管变径必须采用大小头，支管可以采用补心连接，如水表变径处的连接。
方钻杆补心 [油气] kelly bushing ; drill stem bushing
卡盘补心 spider bushing
转盘补心 rotary bushing ; rotary drive bushing ; Master Bushings
方钻杆补心导盘 kelly bushing guide skirt
天王补心丹 Celestial Emperor Heart-Tonifyin
安神补心丸 sedative and heart-invigorating pill ; anshen buxin pills
补心高度 bushing elevation
取出抗磨补心 Retrieve wear bushing
方钻杆补心下入盘 kelly bushing stabbing skirt
这项研究最终的目的是通过病人自身的组织细胞培植心脏肌细胞组织，从真正意义上实现“补心”之术。
The ultimate goal is to grow beating heart muscle from a patient's own cells. And thereby literally mend a broken heart.
设计者可在泵壳内放置喉道补心以降低在填料上的压力(图)。
The designer may lower the pressure on the packing by placing a throat bushing in the pump case (Figure).
方钻杆补心的内径通常与方钻杆的外径（通常是四方钻杆或六方钻杆）相匹配。
The kelly bushing (KB) has an inside diameter profile that matches that of the kelly, usually square or hexagonal.
应用推荐