This shows that in loading a wheelbarrow, it is important to arrange the load as near to the wheel as possible. 伯莎M.克拉克.科学通论.
The fulcrum is at the wheel, the force is at the handles, the weight is on the wheelbarrow. 伯莎M.克拉克.科学通论.
The nutcracker (Fig. 101) is an illustration of a double lever of the wheelbarrow kind; the nearer the nut is to the fulcrum, the easier the cracking. 伯莎M.克拉克.科学通论.
In 1811 Cumming introduced the reel, and in 1814 Dobbs described a wheelbarrow arrangement of reaper in which he used the divider. Edward W. Byrn.十九世纪发明进展.
One of the most useful levers of this type is the wheelbarrow (Fig. 99). 伯莎M.克拉克.科学通论.
The Chinese, probably before that time, had a wheelbarrow arrangement with a seed hopper and separate seed spouts. 威廉·亨利·杜利特.世纪发明.
These mounds are usually about eighteen feet apart, and consist of about as much earth as would fill a very large wheelbarrow. 佚名.神奇的知识之书.
There he would be satisfied, as satisfied as a wheelbarrow that goes backwards and forwards along a plank all day--she had seen it. 戴维·赫伯特·劳伦斯.恋爱中的女人.