喷气孔

The field acid rain spray system was adopted to study the effects of simulant acid rain on leaf injury and chlorophyll content, photosynthesis, permeability of cell membrane, stomatic impedance, and transpiration intensity of 11 crops.

采用田间酸雨喷淋系统在南京中山植物园研究了模拟酸雨对11种农作物的叶片可见伤害和叶绿素含量、光合作用、细胞膜透性、气孔阻抗、蒸腾强度的影响。

Also said driving, tried to play the version only to provide NESSION 350Z, but some four kind of different color different re-equipping edition chose (partner for you to think this vehicle buttocks oversized, kept off line of sight very much), had under the QUICKPLAY pattern around the city and drifts two kind of patterns: The around the city pattern is four Che Bishui arrives the end point most quickly, this racecourse is not very long, but has several S curves to need to be careful, the vehicles were inferior the previous generation easy to control, feel and NFS5 are similar, belong to the design quite real that kind, when immediately is turning around in particular front of a train if you hold down the acceleration key not to put the automobile to be able in-situ to spin, discharges the big group the smog, the air vent also can torch.

游戏的音频似乎没有特别值得关注的地方，大部分是赛车发出的声音，诸如发动机的轰鸣声和刹车时轮胎摩擦地面发出的声音等，音乐和环境噪声相当的低，有3首歌供选择，还是那种动感十足的 Hiphop 曲风。再说说驾驶，试玩版只提供了一辆 NESSION 350Z ，不过有四种不同颜色不同改装的版本供你选择(偶认为此车屁股过大，很挡视线)，在 QUICKPLAY 模式下有环城和漂移两种模式：环城模式还是四辆车比谁最快到达终点，该赛道不是很长，但有几个 S 弯道需要小心，车辆不如上一代易控制，手感和 NFS5差不多，属于设计比较真实的那种，尤其是在马上掉转车头的时如果你按住加速键不放汽车会原地打转，排出大团的烟雾，排气孔还会喷火。

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