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1·The main features of the fissure type nitrogen blow hole and its formation mechanism was described.

叙述灰铸铁件裂隙状氮气孔的主要特征、形成机理。

2·She uses her mouth to blow the water to make a current, then her blow hole to break the current into a ring shape.

她会用嘴吹出一个气泡，然后用喷气孔将气泡吹成圆环。

3·In order to remove blow hole, the influence of jute fibre on permeability of coatings for LFC was investigated.

为了解决消失模铸造件气孔问题，研究了黄麻纤维对消失模铸造涂料透气性的影响。

4·The high ambient temperature and damp weather has harmful influence on the cupola melting that causes increase of blow hole defect.

梅雨季节高温潮湿天气对冲天炉熔炼带来不利影响，导致铸件气孔缺陷增加。

5·Method used to reduce blow hole defects of die castings include 4 aspects:melting, pattern die. parameters of die casting process, and stripping agent.

前言： 消除压铸件气孔的方法包含4个方面： 熔炼、 模具、压铸参数和分型剂。

6·The test of water simulation on the original running system verifies shows that unreasonable original running system causes blow hole in 495A diesel engine block casting.

通过对缸体原浇注工艺的水力模拟，发现原浇注工艺不合理是造成495A缸体产生缺陷的主要原因。

7·The reason and prevention of four kinds defects including surface wrinkled skin (carbon built-up), chock, blow hole, deformation, was introduced in this part of the article.

本部分主要介绍表面皱皮（积碳）、呛火、气孔、尺寸超差及变形等缺陷的产生原因和防止方法。

8·Synopsis: This paper introduces the position and characteristics of the blow hole shrinkage in the side riser of cast steel castings and probes into the formation mechanism and its prevention.

本文介绍了铸钢件边冒口气缩扎的产生部位及特征，并对其形成机理及防止措施进行了探讨。

9·The measures to prevent nitrogen blow hole caused by high nitrogen content of resin sand are: adopting low nitrogen resin, adding iron oxide into sand or coating and keeping resin from moisture.

防止树脂砂含氮量高引起的氮气孔的方法是：选用低氮树脂、型砂或涂料中加入氧化铁粉和避免树脂受潮。

10·The essay analyzes the problem of blow-hole which is easily seen in the process of production and makes further discussion of the technology of improving lid casting.

前言：对烘缸缸盖在铸造过程中易出现的皮下气孔问题进行了分析，并对缸盖浇注系统的工艺改进作了进一步探讨。