反复试验

Finally,i find the true method after trail and error.

经过反复试验，我终于找到了正确的方法。

"Big Blockmaterials technology umbrella plant" in the Chinese Academy of Sciences building materials industry and provincial research institutes and municipal vacuum equipment factory support, and after a year of careful research and trial and error to prove that factory production in the application of a variety of umbrella Block in the garden, the indoor / outdoor furniture, home electrical appliances.

"大宁特种材料伞座工艺厂"在中国科学院和省建材工业科研所及市真空设备厂的鼎力支持下，经过一年时间的精心研制和反复试验，证明本厂生产的各种伞座适用于园林、户内/户外家具、家电等。

They create possibilities for new approaches by creating new associational incentives and spaces, with all the trial and error that this implies.

他们通过建立新的联想动机和空间，反复试验，创造了新方法的可能性。

After contently trinesss. I finally find the right way

经过反复试验，我终于找到了正确的方法。

I have found the right way after experimented over and over.

经过反复试验，我终于找到了正确的方法。

RESULTS After disinfection all parts of device including its cap, outlet, inner surface of pipe and outer wall were germfree.

笔者对壁式氧气管道装置消毒方法进行反复试验研究，现报告如下。1 材料与方法1 1 材料(1)壁式氧气管道装置，包括浸于湿化瓶内的通气管、湿化瓶盖及送氧管出口与流量表连为一体的部件。

In this method, titration with standard solution of perchloric acid in glacial acetic acid was used.

建立了在非水条件下快速测定食品中糖精钠的方法，以冰乙酸为溶剂，用高氯酸的冰乙酸标准溶液滴定，经过反复试验，相对标准误差0.92%~2.93%，加标回收率97.13%~100.3%，结果表明；该法定量分析准确，精确度高，可靠性和重现性好。

Colored concrete C30 was used in the exterior eaves and part of the inner eaves of a new embassy with floor area of 30,000m^2, the first domestic project that widely adopts colored concrete, The raw materials were white Portland cement, waterreductive colored powder of non-calcium chloride, flying ash, mixed active pozzuolana mineral and fiber.

某新建使馆工程建筑面积3万m^2，其外檐和部分内檐采用C30彩色建筑混凝土，为国内首次大面积设汁采用彩色混凝土的工程。原材料采用白色硅酸盐水泥、不含氯化钙且具减水作用的彩色粉、粉煤灰、火山灰活性矿物掺合料、纤维等，经反复试验后确定水灰比为0.41。

Through trial-and-error, you will know exactly how much to give them at feeding time.

透过反复试验法，你将知道在喂食时间究竟该给多少饲料。

Hence Beijing decided in 1978 to explore its own path of development and to adopt a pragmatic, trial-and-error approach for its massive modernization program.

因此，北京在1978年决定探索自己的发展道路，并采取务实的、反复试验的方式来推动大规模的现代化进程。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。