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 ; kelly drive bushing ; drill stem bushing
卡盘补心 spider bushing
下抗磨补心 Run the wear 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 tianwang buxin mini-pills ; Celestial Emperor Heart-Tonifyin
安神补心丸 sedative and heart-invigorating pill ; anshen buxin pills
补心高度 bushing elevation
方补心之下 BKB
制成干果食用，对人体有补心脾，养血安神的功效。
Made of dried fruit consumption, the human body have completed Xinpi, nourishing and soothe the nerves of effectiveness.
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).
本课题主要目的是研究天王补心丸中桔梗舟楫作用的物质基础及其作用机制。
The present study is to elucidate the material basis and mechanisms of Radix Platycodi's vessels-like action.
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