That hole was caused by spall blow - out.(那個洞就是被碎片打穿的。)

The utility model discloses a blanking hole of a dust collector, which is further provided with a blowing device which is used to blow out dust in a blanking channel at regular.(本實用新型公開了一種集塵機的下料口，該下料口處還設置有用于定期將下料通道內的粉塵吹出的噴吹裝置。)

The high ambient temperature and damp weather has harmful influence on the cupola melting that causes increase of blow hole defect.(梅雨季節高溫潮濕天氣對沖天爐熔煉帶來不利影響，導致鑄件氣孔缺陷增加。)

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.(防止樹脂砂含氮量高引起的氮氣孔的方法是：選用低氮樹脂、型砂或涂料中加入氧化鐵粉和避免樹脂受潮。)

She uses her mouth to blow the water to make a current, then her blow hole to break the current into a ring shape.(她會用嘴吹出一個氣泡，然后用噴氣孔將氣泡吹成圓環。)

Compare with current high filling blow film of PE and machine penetrating hole film, it has remarkable difference in principle of forming micropore, process-control and use properties.(這種薄膜與現有的吹塑成型的高填充拉伸pe膜和機械扎孔膜，在形成微孔原理上、工藝控制上和使用性能上有著顯著區別。)

The traditional way they catch rats is to light a fire in a clay pot. They blow air through a small hole in the bottom to send smoke into the underground spaces where rats live.(傳統的捕鼠方法是在一個粘土罐里點火，然后通過底部的一個小孔將煙吹到地下老鼠生活的空間里。)

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.(本文介紹了鑄鋼件邊冒口氣縮扎的產生部位及特征，并對其形成機理及防止措施進行了探討。)

In order to remove blow hole, the influence of jute fibre on permeability of coatings for LFC was investigated.(為了解決消失模鑄造件氣孔問題，研究了黃麻纖維對消失模鑄造涂料透氣性的影響。)

The main features of the fissure type nitrogen blow hole and its formation mechanism was described.(敘述灰鑄鐵件裂隙狀氮氣孔的主要特征、形成機理。)