With the reconstruction of old road , the upgrade of road scale , the accretion of traffic quantity and the manifold of heavy vehicle in my country recently , our desire is higher and higher about the transit capacity of the old bridges . it is more impendent to confirm practice status and supporting load of these bridges on the calzada 近年来随着我国路网改造、旧路改建和公路等级的提升，交通量的日渐增大，重型车辆的日渐增多，对原有的公路旧桥的通行能力要求愈来愈高，确定此类公路桥梁的实际使用状况和实际承载力就显得尤为迫切。
Such measures include putting roads underground as far as possible , promoting the use of utlra - low suplur diesel by heavy vehicles , trial use of lpg by light buses and taxis , adoption of the latest euro bus engines and retrofitting after treatment devices , etc . transport department will continue to explore other effective means that help improve the air quality in hong kong 在结集各政府部门，以及如运输公司等相关团体的力量后，运输署已就减少交通工具排放废气的问题，实施一系列措施，其中包括增建地下道路、鼓励重型车辆使用超低硫柴油、试行石油气小巴及的士、选用新推出的欧洲机头，以及改良车辆机械等。
Specially , the rotating ramjet with shaft power output was discussed . result showed that the thermodynamic cycle of the rotating ramjet is a breton cycle including two anti - cycle processes . because the advantage on thermodynamic performances and structure , the rotating ramjet will has wide prospective application in aircraft and powers system in heavy trucks , military facilities , tanks , warship as well as power plant 着重讨论了轴功输出方案的旋转冲压发动机,初步分析表明,旋转冲压发动机的热力循环是加进了两个反循环的布雷顿循环,该发动机在热力性能和结构方面与燃气轮机相比有独特优点,有望在现代和未来各类飞行器及各类重型车辆、战略设施、坦克、舰船动力、电力等能源动力领域获得广泛应用。
On the local front , on january 1 , we introduced euro iv petrol standards for our vehicles , and in august , we introduced a new policy of imposing emissions caps in the specified process licences for power plants . we also completed a programme of retrofitting about 36 600 heavy diesel vehicles with emission reduction devices as well as another programme which provided incentives to owners to replace 2 521 diesel light buses with lpg light buses 在本港方面，我们于2005年1月1日实施欧盟四期车用汽油规格，其后并于8月推行新政策，在发电厂的指明工序牌照订明排放上限，另亦完成重型柴油车辆改装计划，促使本港约36 600辆重型车辆安装废气消减装置以及推行另一套计划，向2 521辆柴油公共小巴的车主提供经济诱因，鼓励他们改用石油气小巴。
