污染空气的严重事故时有发生。
Time and time again there are serious accidents that pollute the air.
重大安全事故时有发生。
但是其安全运行的问题日益突出，事故时有发生。
But some undesirable accidents have happened between whiles.
由于种种原因，各类危化品泄露、火灾爆炸事故时有发生。
For a variety of reasons, all types of accidents of leakage, fire and explosion have occurred from time to time.
但由于输送带自身原因和外在因素影响，断带事故时有发生。
But because of the influence of belt itself and outside factor, the accident that the belt is cut off often appears.
据悉，由于该地区风浪较大、超载现象多见，海上事故时有发生。
Maritime accidents are not uncommon in this area due to billowy waves and overloading.
在水上运输过程中，因船舶超载运输而导致的沉船事故时有发生。
In the water transport process, the sunken wreck accident which causes because of the ships overload transportation sometimes occurs.
随着煤矿开采深度的增加，安全隐患日益突出，安全事故时有发生。
With the increasing of the mining depth, the potential safety hazard is outstanding day by day, the incident happens occasionally.
我国地形地貌复杂，覆冰面广，输电线路绝缘子冰闪事故时有发生。
Due to the varied topography and large icing area in China, the flashover accidents of ice-covered insulators happen with high frequency.
制动管压力过高造成制动软管爆破而使列车紧急停车的事故时有发生。
The too high pressure of the braking tube often results in the cracking of the braking hose, as a result of which the train is frequently emergency-braked.
电缆在石化企业中广泛采用，电缆着火甚至延燃酿成火灾扩大事故时有发生。
Cables were adopted widely in petrochemical enterprise. It happened sometimes that ignition of cables as much as continued ignition spawning extended fire accident.
因规避台风的措施采取不当而引起船损、货损甚至船毁人亡的事故时有发生。
The improper measures to evade typhoon often cause damage to ships and cargo, and even sink ships and drown people.
工业过程中管状容器气体爆炸事故时有发生，严重威胁着过程工业的安全生产。
Gas explosion accident of cylindrical vessels happens from time to time in industries, which severely threatens the safe operation of the industries.
场桥在作业过程中把拖车车架吊起的事故时有发生，此类事故引起的后果严重。
Now and then in container operation there are accidents in those the container trucks have been lifted by the container yard gantry crane. The subsequence is serious.
由于我国还没有相应的技术标准，导致倒塌、掀顶、火灾等安全隐患和事故时有发生。
Because we have no corresponding technical standards, leading to collapse, who top, fires and other safety problems and accidents.
就锚喷支护过程中隧道塌方事故时有发生的问题，从理论上对塌方的原因进行了分析。
Some problems often occur when using anchor spray support against tunnel landslip. The landslip theory reasons are did analysis in this paper.
但是，空气锤、特别是配套冲击钻头断脱导致的井下事故时有发生，影响因素极为复杂。
But the matching impact bits often dropped off from the pneumatic hammers and led the well accident caused by complex factors.
摘 要：长江航道上船撞桥的事故时有发生，对船舶和桥梁的安全都构成了极大的危害。
Absrtact: The accidents of the ships bumping on the pier occur from time to time, and such accidents bring much harm to the ships and the pier.
但同时，船舶触碰桥梁事故时有发生，造成了一定的经济损失、人员伤亡和不良的社会影响。
Collision accidents of ships against Bridges took place sometimes, resulting in economic lost, injury and death of persons, and bad social image.
近年来，我国尾矿库事故时有发生，给人民生命财产造成了极大威胁，总体安全形势不容乐观。
In recent years, the accidents of tailing reservoirs happened occasionally, it has caused great threaten to people's lives and properties in our country, and the safety situation is not optimistic.
在各种类型的钢结构中，由于结构失稳造成的伤亡事故时有发生，凸显了稳定问题研究的重要性。
In various types steel structure, casualties results from the structure instability, which highlights the importance of research on the stability.
但由于种种自然或人为原因，管道泄漏事故时有发生，有时会伴随着巨大的生命财产损失和环境污染。
Sometimes, however, pipeline leakage takes place due to some natural or artificial damages. Leakage accidents may cause loss of life and properties along with environmental pollution.
高压开关柜一次触头因温度过高而造成事故时有发生，由于处于高电压状态，对该处的温度监测较为困难。
The accident happens from time to time due to high temperature of main contacts inside HV switchgear cabinet. It is difficult to monitor the temperature there under high voltage condition.
高压开关柜一次触头因温度过高而造成事故时有发生，由于处于高电压状态，对该处的温度监测较为困难。
The accident happens from time to time due to high temperature of main contacts inside HV switchgear cabinet. It is difficult to monitor the temperature there under high voltage condition.
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