PREFACE.

The contents of the present work, except the Introduction and the chapter on Gauges¹, consist mainly in a revision of a series of articles published in "Engineering" and the Journal of the Franklin Institute, under the head of "The Principles of Shop Manipulation," during 1873 and 1874.

The articles alluded² to were suggested by observations made in actual practice, and by noting a "habit of thought" common among learners, which did not seem to accord with the purely³ scientific manner in which mechanical subjects are now so constantly treated.

The favourable⁴ reception which the articles on "Shop Manipulation" met with during their serial⁵ publication, and various requests for their reproduction in the form of a book, has led to the present edition.

The addition of a few questions at the end of each chapter, some of which are not answered in the text, it is thought will assist the main object of the work, which is to promote a habit of logical investigation⁶ on the part of learners.

It will be proper to mention here, what will be more fully⁷ pointed⁸ out in the Introduction, that although workshop processes may be scientifically explained and proved, they must nevertheless be learned logically. This view, it is hoped, will not lead to anything in the book being construed⁹ as a disparagement¹⁰ of the importance of theoretical studies.

Success in Technical Training, as in other kinds of education, must depend greatly upon how well the general mode of thought among learners is understood and followed; and if the present work directs some attention to this matter it will not fail to add something to those influences which tend to build up our industrial interests.

J. R.

10 John Street, Adelphi,

London, 1875.

1 gauges   

n.规格( gauge的名词复数 )；厚度；宽度；标准尺寸v.（用仪器）测量( gauge的第三人称单数 )；估计；计量；划分

参考例句：

• A thermometer gauges the temperature. 温度计可测量温度。 来自《简明英汉词典》
• The fuel gauges dropped swiftly. 燃料表指针迅速下降。 来自《简明英汉词典》

2 alluded   

提及，暗指( allude的过去式和过去分词 )

参考例句：

• In your remarks you alluded to a certain sinister design. 在你的谈话中，你提到了某个阴谋。
• She also alluded to her rival's past marital troubles. 她还影射了对手过去的婚姻问题。

3 purely   

adv.纯粹地，完全地

参考例句：

• I helped him purely and simply out of friendship.我帮他纯粹是出于友情。
• This disproves the theory that children are purely imitative.这证明认为儿童只会单纯地模仿的理论是站不住脚的。

4 favourable   

adj.赞成的，称赞的，有利的，良好的，顺利的

参考例句：

• The company will lend you money on very favourable terms.这家公司将以非常优惠的条件借钱给你。
• We found that most people are favourable to the idea.我们发现大多数人同意这个意见。

5 serial   

n.连本影片，连本电视节目；adj.连续的

参考例句：

• A new serial is starting on television tonight.今晚电视开播一部新的电视连续剧。
• Can you account for the serial failures in our experiment?你能解释我们实验屡屡失败的原因吗？

6 investigation   

n.调查，调查研究

参考例句：

• In an investigation,a new fact became known, which told against him.在调查中新发现了一件对他不利的事实。
• He drew the conclusion by building on his own investigation.他根据自己的调查研究作出结论。

7 fully   

adv.完全地，全部地，彻底地；充分地

参考例句：

• The doctor asked me to breathe in,then to breathe out fully.医生让我先吸气，然后全部呼出。
• They soon became fully integrated into the local community.他们很快就完全融入了当地人的圈子。

8 pointed   

adj.尖的，直截了当的

参考例句：

• He gave me a very sharp pointed pencil.他给我一支削得非常尖的铅笔。
• She wished to show Mrs.John Dashwood by this pointed invitation to her brother.她想通过对达茨伍德夫人提出直截了当的邀请向她的哥哥表示出来。

9 construed   

v.解释（陈述、行为等）( construe的过去式和过去分词 )；翻译，作句法分析

参考例句：

• He considered how the remark was to be construed. 他考虑这话该如何理解。
• They construed her silence as meaning that she agreed. 他们把她的沉默解释为表示赞同。 来自《简明英汉词典》

10 disparagement   

n.轻视，轻蔑

参考例句：

• He was humble and meek, filled with self-disparagement and abasement. 他谦卑、恭顺，满怀自我贬斥与压抑。 来自互联网
• Faint praise is disparagement. 敷衍勉强的恭维等于轻蔑。 来自互联网