intake stroke

the piston travels down on the intake stroke, up on the compression stroke, down on the power stroke and up on the exhaust stroke.

进气行程，活塞下行；压缩行程，活塞上行；做功行程，活塞下行；排气行程，活塞上行。

the piston moves up and compresses the trapped air fuel mixture that was brought in by the intake stroke.

活塞向上移动时，压缩在进气行程中吸入的混合气。

the other fuel is injected in the intake stroke, which enhances the gas mixture concentration around the spark plug during ignition.

另一次喷射在进气冲程，用于提高点火瞬间火花塞附近混合气质量分数。

this action could open an inlet valve for an intake stroke, or open an exhaust valve for an exhaust stroke.

这过程能使进气门在进气行程打开，或者排气门在排气行程打开。

in-cylinder flow generated during intake stroke is disorganized at the beginning, and then it develops into a large number of small-scale swirls, which develop into a single stable large-scale swirl at the later half of intake stroke.

模拟结果表明，在进气过程初期，缸内气流运动是紊乱的；随后，逐渐形成多个小涡流；到进气过程中后期，单一大尺度进气涡流形成并逐步得到发展、稳定和加强。

This finding suggests that smoking may modify the relationship between alcohol intake and stroke risk.

这个发现提示吸烟可能调整了饮酒与中风风险的关系。

the research shows that, during intake process pressures both in cylinder and in port first reduce and then increase. at the end of intake stroke, pressure in cylinder is slightly lower than local atmospheric pressure.

研究表明，在进气过程，进气道及缸内的压力都有先降低后增大并趋于稳定的趋势，进气行程结束时缸内的压力略低于当地大气压。

there is flow lamination phenomenon during the intake stroke, so the natural gas should be injected to the cylinder in the end of intake stroke in order to improve the performance of the engine when the load is small.

进气过程中存在流动分层，为改善小负荷时发动机性能，天然气应尽可能在进气冲程中、后期进入气缸；

The risk factors for cerebral hemorrhage: hypertension, dyslipidemia, smoking history, history of alcohol intake, past history of stroke, diabetes, et al.

脑出血的危险因素有高血压、血脂异常、吸烟史、饮酒史、既往脑卒中病史、糖尿病等。

in resonance induction, the air in the intake system is excited to vibrate in a resonance intake pipe by means of the intake stroke, thereby increasing the amount of air taken in in the resonance range.

在谐振进气中，进气系统中的空气在谐振进气管中通过进气行程激烈振动，因而增加谐振范围中进入的空气量。