Reciprocating internal combustion engines - exhaust emission measurement - part 4 : test cycles for different engine applications 往复式内燃机.废气排放测量.第4部分:不同的内燃机用途的试验周期
All of these had established the solid foundation for optimizing design , shorting the period of development and experiment of crycooler 从而为制冷机的优化设计、缩短开发和试验周期奠定了基础。
But it takes much time to tune the exciting force , and the testing precision is decided much by the operator ' s experience 但纯模态试验周期较长,且识别精度在很大程度上取决于操作人员的水平和经验。
This new method can use the limited time , outlay and resource effectively to predict the lifetime of the rlg 这种寿命预测方法能够有效的利用有限的时间、经费和资源来进行寿命预测,缩短试验周期,减少试验费用。
Equipment reliability testing - part 3 : preferred test conditions - section 6 : test cycle 6 : outdoor transportable equipment - low degree of simulation 设备可靠性试验.第3部分:优选试验条件.第6节:试验周期6 :低模拟度的户外运输设备
With the new methods provided , only a small number of samples are required at the same risks , so the test expenses and test time are reduced 该方法在相同风险下只需少量的现场试验就可以进行维修性验证，从而减少试验成本，缩短试验周期。
Water pressure method is applicable for evaluating permeability of concrete . the test time needed is short , and operation and pretreatment is easy 通过研究发现水压法对于评价混凝土渗透性来有很好的适用性,而且试验周期短,操作简便,对试件的预处理简单。
Reciprocating internal combustion engines - exhaust emission measurement - test cycles and test procedures for field measurement of exhaust gas smoke emissions from compression ignition engines operating under transient conditions 往复式内燃机.排放测量.压燃式发动机瞬态工况时排气烟度现场测量用试验周期和试验方法
Reciprocating internal combustion engines - exhaust emission measurement - test cycles and test procedures for test - bed measurement of exhaust gas smoke emissions from compression ignition engines operating under transi ent conditions 往复式内燃机.排放测量.压燃式发动机瞬态工况排气烟度试验台测量用试验周期和试验方法
Abstract : abstract ： using the method described in the paper ， the different group samples are nermalized to obtain reliability data of producs with long lifetime in shorter testing cycles 摘要：摘要：对所选取的不同批样本进行归一化处理后，就可以在较短的试验周期内获得较长寿命剖面上产品的可靠性数据，使可靠性评估工作变得可行，评估结果可信、合理。
