pore-expanding
英['pɔːrɪksp'ændɪŋ]
美['pɔːrɪksp'ændɪŋ]
- 扩孔
双语例句
- In addition, because of the large pipe diameter, more bore expanding levels are needed, and it interferes with stratum by impact.
加之穿越管径大，扩孔级数较多，对地层的冲击扰动较大，增加了塌孔的可能性，施工难度很大。 - The die and eqiupment of internal pressurized expanding retaining rings and double cone wedge-reaming die were also studied.
对内增压扩胀护环的装置和双锥面楔块扩孔模具进行了研究。
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