气门

In order to deeply comprehend the wear regularity of chilled alloy cast iron tappet , the influence of surface layer microstructure on wear resistance was studied.

为了深入了解冷激合金铸铁气门挺杆的磨损规律，研究了冷激合金铸铁气门挺杆表层组织对耐磨性的影响。

1"On the tire with an inner tube , the valve is mounted on the tube. On the tubeless tire, the valve is mounted on the wheel rim."

有内胎式轮胎气门是直接做在内胎上的，无内胎式轮胎的气门安装在轮毂上。

Results showed that abundance, richness and diversity of arthropod communities decreased with depth. A negative association was found between canopy openness and the number of arthropod groups in the lifter layer; some arthropod taxa, such as the Uribatida, Prostigmata and Mesostigmata, were found in a wide range of light conditions, whereas the Hymenoptera, Symphyla, Pseudoscorpiones and Lepidoptera larvae may be photophobic.

结果表明土壤节肢动物的多度、丰富度和多样性随土壤层的加深而下降，具有明显的表聚性；林冠开度与凋落物层的土壤节肢动物类群数量呈负相关；甲螨亚目、中气门亚目和前气门亚目动物对光照的适应范围广；膜翅目、鞘翅目幼虫、综合纲和伪蝎目动物具有明显的避光性；土壤节肢动物类群的分布与林冠开度、土壤自然含水量、电导率和有机质关系密切。

Regrind valve and/or seat.

重新研磨气门和／或气门座

The effective anti-wear additive system mini mizes wear in even the most soph is ticated valve train me chan is ms, including those with variable valve timing.

在有效的抗磨损添加剂磨损降到最低，即使在最先进的气门驱动机制，包括可变气门正时的。

The spiracles are guarded by bristles which aid in filtering dust and other foreign matter from the air before it enters the tracheae.

气门由刚毛保护，这种叫毛在空气进入气门以前，帮助过滤空气中的灰尘和其他异物。

The results show that in the formation process of tumble during the intake stroke,two vortexes are generated in the cylinder.

增加流经排气门侧的进气气流或抑制直接沿进气门侧缸壁流入气缸的气流，都能提高滚流强度。

The 60-degree dual overhead cam, 24-valve powerplant boasts a number of performance refinements, including electronic throttle control, variable valve timing, multi-port fuel injection, two-stage roller chain cam drive, aluminium block and cylinder heads and a forged steel crankshaft.

在60度的双顶置凸轮轴，24气门发动机拥有一个包括电子节气门控制数量的性能改进，可变气门正时，多点燃油喷射，两级驱动凸轮滚子链，铝块，缸盖与锻钢曲轴。

Keywords valve set;valve guider;compound cutting tool;cutting parameter

气门座圈；气门导管孔；复合加工刀具；切削参数

Two dynamic models of valve train with direct-acting hydraulic lash adjuster were presented.

针对有液压间隙调节器的气门机构，采用两种模拟HLA的方法—弹黄阻尼模型和液压模型—构造了气门机构的动力学计算模型。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐