The neutral scent of kerosene is conc wntrated in the center of the scene .

煤油的中性气味在场景中心被浓缩。

The conc lusions , which adhesion ability of road to the tyre reduces so that braking dist ance increases while road surface roughness increases , are obtained .

得出路面不平度增大时，使路面对车轮的附着能力下降，因而使制动距离增长的结论。

Measures taken by the ratifying state to this effectshall not be in contradiction wit h the principle of free movement ofworkers stipulated by the treaties to which the two states conc erned maybe parties .

批准会员国在这方面采取的措施不应与两个有关会员国均为缔约方的条约里规定的工人自由运动的原则相抵触。