The paper compares the theoretical initiation process of a Taishan 25 tractor engine with its practical process.

比较了泰山25型拖拉机机组的理论起步过程与实测起步过程。

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The efficiency of steering pump of port tractor lost very heavy when engine was in high speed.

港口牵引车液压系统中的转向泵在发动机高速状态时的能量损失较大。

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Modifications of engine and tractor are discussed and experimental data presented in this paper.

本文就发动机及拖拉机的改装等问题进行了探讨，并对试验结果进行了分析。

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The technology isn't new-a patent for a hydrogen internal combustion engine was issued in 1928, and a 20hp fuel-cell tractor was demonstrated in the late 1950s.

FORBES: Magazine Article

During the hearing the HSE said the tractor's starter motor had been faulty for at least two months and staff had been starting the engine by using a screwdriver or spanner to short the connection.

BBC: Leicester