The composition and properties of two stroke engine oils with biodegradability were discussed;Points for attention were given on developing two stroke engine oils with high performances and low pollution to enviromental protection.
介绍了生物降解性试验方法ＣＥＣ－Ｌ－３３－Ｔ－８２法，对生物降解性的二冲程发动机油的组成与性能评定进行了讨论，并给出了研制对环境有益的高性能、低污染的二冲程发动机油应注意的问题，对我国生物降解性润滑剂的研制提出了建
The paper deals with the data base technology for visualized numerical calculation of flows in exhaust channels, transfer passages, ports and cylinder in two stroke engine.
讨论了二冲程发动机扫、排气道和气口气缸内气体流动数值计算可视化数据库技术，采用合理的数据结构及约束管理机制，提出了一种面向对象的数据库结构化模块设计方法。
"As lower hood lines and over square engines became popular, the semi-slipper and full-slipper pistons came into use. "
由于低发动机罩和短行程发动机的进一步普及,半围延裙活塞和滑裙式活塞开始使用。
"One reason for the slipper piston is that, on the short-stroke, over square engine, the piston skirt had to be cut away to make room for the counterweights on the crankshaft. "
使用滑裙活塞的原因是:短行程发动机需除去部分活塞裙部,从而为曲轴的平衡重让出空间。
Four-stage-engine Operation
四行程发动机工作过程
Two-stage-engine Operation
二行程发动机工作过程
To make a quick trip, especially in an airplane.
（坐飞机）作短程旅行
Implementation of Auto Turn Control DF100A Short Wave Transmitter
DF100A型短波发射机自动调谐控制的工程实现
automatically tuned short-wave transmitter
自动调谐短波发射机
DYNAMIC BEHAVIOR OF THE ON-SET AND DAMPING PROCESS OF THE THERMO-ACOUSTIC ENGINE
热声发动机起振、消振过程的动态行为
oversquare engine
超方发动机(气缸直径大于活塞行程的发动机)
Research on Development of a LPG Four Stroke SI Engine for Motorcycle;
LPG四行程摩托车发动机的开发研究
The out phase failure current of self-generating calculation,setting and action analysis of the protection
自并励发电机相间短路电流计算及保护配置和动作行为分析
1580mm Hot rolling short stroke control
1580mm热轧带钢立辊轧机的短行程控制
the noise made by a short puff of steam (as from an engine).
（如发动机）在短暂喷气时发出的声音。
part-turn electric actuator
角行程电动执行机构
pneumatic rotary actuator
角行程气动执行机构
short-circuit operation
短路运行 -电路或发电机的
BORE AND STROKEThe size of an engine cylinder is referred to in terms of the Bore and stroke.
内径和行程:发动机气缸的尺寸与内径和行程有关。
FPGA-based dynamic reconfigurable HF transceiver
基于FPGA的动态可重配置短波收发机