这个“二人组”就成了已知最古老的化石证据，来支持无气门亚目一类螨虫的搭便车现象，或称寄载现象。
That makes the duo the oldest known fossil evidence of hitch-hiking behavior, or phoresy, in a large group of mites called the Astigmata.
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。
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.
在气门下降段，将气门的落座速度和下降段缓冲包角取小些，使得气门落座平稳，无激烈的冲击现象。
During the drop, better have a lower speed of resitting and a smaller wrap Angle, which can have a smooth resitting without fierce impact.
从生胶、硫化体系、防护体系和补强体系的选择以及炼胶工艺等方面对无内胎气门嘴胶料的配方进行探讨。
The formulation of the valve compound for tubeless tire was investigated in terms of polymers, curing systems, antioxidants and reinforcing agents as well as mixing technology.
本实用新型涉及采用环保无铅铝合金为气门嘴金属体的一种无铅铝合 金包胶气门嘴。
The utility model relates to a lead-free aluminum alloy rubber coating valve which adopts the environment-friendly lead-free aluminum alloy as a metal body of the valve.
无凸轮轴气门驱动的主要问题是响应速度不够高、气门落座冲击、能耗过高以及驱动系统复杂昂贵。
The main problems of the camshaftless valve actuation are long response time, hard valve landing, high power consumption and complex…
无凸轮轴气门驱动的主要问题是响应速度不够高、气门落座冲击、能耗过高以及驱动系统复杂昂贵。
The main problems of the camshaftless valve actuation are long response time, hard valve landing, high power consumption and complex…
应用推荐