The remain life time of the combustion engine depends on the wear extent of the cylinder liner, piston, crank bearing and crank principal bearing of the combustion engine.

With the energy analysis to wavelet packet frequency bands, the feature of relative energy of frequency bands can be extracted accurately, which provides the diagnosis of crank bearing wear fault with quantitative foundation.

利用小波包频带能量分析法实现了对信号各频带相对能量信息特征的准确提取，为曲柄轴承磨损故障的识别提供了定量的依据。

This paper focuses on the optimization design of curved stem cranking bar mechanism used single variation parameter ( auxiliary angle) based on the optimum drive angle and maximum itinerary velocity variation coefficient. The method is practical, feasible and can help improve the quality of mechanism design.

利用单变参数（辅助角）按最佳传动角及最大行程速度变化系数对曲柄摇杆机构进行优化设计，提高了机构设计质量，方法实用可行。

The fixed pulley is rotated by a cranking bar to wind the steel cable, a spare tire can be lifted, and the spare tire can be put down stably by rotating in reversal the cranking bar.

使用摇把转动定滑轮圈绕钢丝索，即可提升备胎，反转摇把即可平稳降下备胎。

During start process, only the initial 2 cycles produce relative high level nitrogen oxide ( NO) emission, and the NO concentration decreases with the rising of cranking speed.

起动过程中只有第12循环会产生较多的氮氧化物，整个起动过程氮氧化物都较低，氮氧化物浓度随拖动转速升高而降低。

The coolant temperature, intake port deposit, cranking speed and ignition timing all influence the limit with various mechanisms.

拖动转速、冷却水温度、进气道油膜残留和点火时刻等燃烧边界条件都对窗口区域造成影响。

The intake manifold pressure is lower when the cranking speed increases, thus the fuel metering strategy should be modified.

随着拖动转速升高，进气歧管压力降低，对应的喷油策略也应随之调整；

The investigation of the main influence factor on the low temperature cold cranking simulation test for engine oils

发动机油的低温启动模拟试验的主要影响因素考察

The positive crankcase ventilation valve and gas caps with air-pollution control valves reduce volatile organic compound loss.

曲柄轴箱通风阀和配有废气帽的空气污染控制阀（使用）减少挥发性有机混合物释放有积极作用。

The Scavenging system is composed of crankcase, main scavenging passage, sub passage stratifying pipe, reed valve and carburettor.

该分层扫气系统由曲轴箱、主扫气道、副扫气道、分层管、笛簧阀和化油器等组成。

The presence of dispersants and detergents increase the foaming tendency of crankcase oil.

在场的分散剂和洗涤剂增加发泡趋势曲轴箱油。

A: It tastes like crankcase oil, but delicious.

A：这味道有点像汽车里的机油，不过还是很好吃。

Fit bottom line on crankcase with a banjo bolt and two new aluminium seals.

使用一个空心螺栓和两个新的铝制密封件在曲轴箱上安装底部管路。

Research on Fracture Splitting Processing Technology and Equipment of Engine Crankcase Bearing Block

发动机缸体主轴承座裂解加工技术与装备研究

Results: The main causes of encephalic infarction in the youngster were hypertensive cerebral arteriosclerosis, cranium trauma, cerebral arteritis and drinking.

结果：青年脑梗塞的主要病因为高血压脑动脉硬化、头颅外伤、脑动脉炎及饮酒。

Results Abdominal operation was conducted in 13 cases. Cerebral cranium operation was performed in 3 cases. Both abdomen and brain operation were performed in 1 case.

结果本组腹部手术治疗13例，保守治疗19例，颅脑手术治疗3例，实施剖腹及开颅手术1例。

Objective The purpose of this study was to sum up the experience that we rescued patients with abdominal closed injury combined with cerebral cranium injury by operation.

目的为了降低腹部闭合性损伤合并颅脑损伤的死亡率，对本院诊断和治疗本病的经验进行总结。

Diagnosis and Treatment of Abdominal Combined Cerebral Cranium Injury

合并颅脑损伤的腹部外伤诊治

Objective To approach the surgical methods and therapeutic experience of cutting tumors of pineal region via occipital craniotomy.

目的探讨枕部的开颅术切除松果体区肿瘤的手术方法和治疗的经验。

Running with Scissors Methods: Double diagnosis, the improved craniotomy and glossopharyngeal nerve scissors.

方法：采用术前术中双重诊断法、改良经颅舌咽神经切断术、舌咽神经剪进行诊断治疗。对该病做流行病学调查。

Conclusion The appearance of contusion at the periphery or inner of brain stem, trauma of cranial nerves roots, responsive hypertrophy of astrocytes may serve as the evidences of primary injuries on the brain stem.

结论脑干浅表部和/或脑干内部挫伤、颅神经根部损伤及星形胶质细胞反应性增生肥大可作为原发性脑干损伤的诊断依据。