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- This paper introduces research and development of DH pneumatic perforating machine, hydraulic percussion hammer and trajectory -controlled pneumatic perforating machine and their application. 非开挖技术在国际发展迅速，在我国尚有差距，本文介绍我国DH气动穿孔机、液压冲击锤、轨迹可控气动穿孔机的研制及工程应用情况。
- percussion hammer firing mechanism 击针锤击发装置
- Taylor's percussion hammer 泰勒(氏)叩诊锤
- I am not entirely a back number, Taylor. 泰勒，我还不是一个毫无力量的人。
- Taylor has too much prudence to gamble. 泰勒为人谨慎小心，不会去投机冒险。
- Mr. and Mrs. Taylor had a seven-year-old boy named Pat. 泰勒夫妇有一个七岁的男孩，名叫帕特。
- They spend the winter(s) in a warmer climate. 他们在气候较暖的地方过冬。
- Most plural nouns in English end in "s". 英语的复数名词多以“s”结尾。
- The sweater had shrunk after repeated washing(s). 这件套头毛衣洗过多次已缩水了。
- Some old folk(s) have peculiar tastes. 有些老人有特殊的爱好。
- Taylor, the capitalist, used to play down to most of his employees. 资本家泰勒对他的大部分雇员经常故意装得态度谦逊，企图赢得他们的好感。
- percussion hammer 冲击式凿岩机,冲击锤,叩诊锤
- Mr. Taylor relegate his project to his son after he have ret. 泰勒先生退休后把他的事业移转给儿子。
- Answer the following question(s). 回答下列问题。
- An American telephone ordering system of Baker and Taylor. 美国Baker和Taylor公司的一种电话订购系统。
- Most plural nouns in English end in s'. 英语的复数名词多以s结尾。
- Flint's percussion hammer 弗林特(氏)叩诊锤
- The drug affects one's power(s) of concentration. 这种药影响人精神不能集中。
- Here are the designs. Which one(s) do you prefer? 这就是那些图样.;你喜欢哪一个[些]?
- folding percussion hammer 折式打诊锤
