1) man-hand hole
人手孔
1.
To solve the traditional long-term and labour-consuming problems existed in communication pipe-line man-hand hole, a new type man-hand hole by processing hard material PVC is proposed.
为了解决传统通讯管道人手孔存在的费时费工等问题,采用硬质聚氯乙稀板材加工制造了一种新型人手孔。
2) Manholes,and handholes
人孔，手孔
3) Handhole and manhole openings
手孔和人孔开孔
4) quick-open manhole
快开人、手孔
1.
The structure of compression resistance sanitary-class quick-open manhole was introduced in this paper.
随着医药和食品行业的高速发展 ,我国的标准人孔已不能满足市场的需要 ,于是就有了卫生级人孔 ,本文对卫生级快开人、手孔的结构加以介绍。
5) d manhole openings
手孔和人孔开口
6) Hand, a Second Face of Human Beings
手,人的第二面孔
补充资料：第二孔(继发孔)型缺损
第二孔(继发孔)型缺损
ostium secondary defect
是心房间隔在形成上发生障碍，一般缺损较大，多在卵圆孔附近称第二孔(继发孔)型缺损。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条