The necessity of valve shut down starting loading device for non-power check valve are described and a kind of valve are intrduced which have a auto-momentary loading device of starting moment of torsion acted by momentary deferential pressure by drainage pipeline system at normal stop sorking or breakdown condition.
阐述了无动力止回阀设置关阀起动加载装置的必要性 ,介绍了一种利用给排水系统运行及正常停泵或事故停泵时瞬间介质压差对止回阀起动转矩进行自动、瞬间加载的装置 ,及其主要结构元件的设
The impact noise of the stacker is very serious.
垛板机撞击噪声严重 。
The result shown that there is good agreement between experimental value and predicted by SEA,and the SEA calculation model is feasible for calculating the impact noise of a floor plate.
应用统计能量分析(Statistical Energy Analysis,简称SEA)理论对隔绝建筑楼板撞击噪声的机理进行探讨,通过建立相应的理论模型,对楼板的隔声能力进行计算,且与楼板隔声实测结果相符,这表明应用SEA建立的隔绝撞击噪声计算模型是可行的。
The contrast test for impact sound insulation of concrete floors with different wood-floor coverings is presented.
通过对混凝土楼板和各种木地板构造方案的撞击声隔声性能的对比测试,对其隔声机理的定性理论分析,以及对铺装方法、弹性垫层等影响因素的讨论,研究了木地板对混凝土楼板撞击声的隔绝作用。
This paper introduces the rating of impact sound insulation of floor coverings and gives 2 practical examples of the calculation, meanwhile, discusses how to use the results from measurements and rating for the designs of sound insulation.
介绍楼板覆面层隔绝撞击声的评价方法,给出评价计算实例,并探讨测量、评价数据在隔声设计中的应用问题。
a clash of cymbals, swords
铙钹、 剑的撞击声.
He fell on the floor with an awful whomp.
他摔在地板上发出一声可怕的撞击声。
followed by a sharp CRACK, THUD,
紧接着是尖锐的裂缝声，撞击声，
My first impressions were of nosie and banging.
我的最初感觉就是喧哗声和撞击声。
The sounds of cooking and the clatter of dishes came from the kitchen.
烧饭声和碗碟的撞击声从厨房传来。
A loud, harsh noise, such as that made by two metal objects in collision.
撞击声，铿锵声强烈刺耳的声音，如两个金属物体碰撞发出的声音
The car hit the tree with a sickening crash.
那辆汽车撞在树上发出让人难受的撞击声.
The car hit the tree with a sickening crash
那辆汽车撞在树上发出让人难受的撞击声。
He is aroused by the crash and has been leaped .
他被撞击声所惊醒，一跃而起。
The dustbins clashed as people emptied rubbish.
垃圾桶在人们倒垃圾时发出撞击声。
Then I heard a loud crashing sound from the back of the house.
然后他听到屋子后面传来一声很响的撞击声。
She heard of the gentle tinkling of teaspoons, and musical clatter of cups and saucers.
她听见茶匙轻微的叮??声，杯盘悦耳的撞击声。
The striking together of two bodies, especially when noise is produced.
敲打两物体的撞击，尤指能撞出声响时
To strike together with a loud, harsh, metallic noise.
撞击击打并发出强烈刺耳的金属响声
A sudden loud blow or bump.
砰然作响发出砰一声的猛击或猛撞
You hear the sound of the boat hitting the water.
你能听到船撞击水的声音。
The sound of the river moving about downstairs was frightening.
河水在楼下撞击的声音叫人惊恐万分。
a rattling sound as of hard things striking together.
类似坚硬的物体互相撞击的卡嗒声。