做试验

We can put the same quantity of oil into the jet engine twice, one test on ordinary ground, and the other on ice ground. If the reading values on the spring mechanical counter will be the same at 2 times, then the spaces the heavy moves will be different.

在喷气发动机中放入同样多的燃油分别做2次试验，一次在普通地面上，一次在冰面上，如果2次试验中弹簧计力器的读数都一样，那么重物前进的距离是会不同的。

MLA test may be a complementary method used to detect the mutagenic effect of hair restorer.

小鼠淋巴瘤细胞试验可做为毒性较大育发剂的遗传毒性筛检的补充试验。

Results toxic test and ld 50 test showed that nata de coco strain was free from toxin.quality control system has not been established and sanitary facilities were incomplete in most fac-tories.totally54samples of nata de coco were hygienically determined.the pollution level of elements of pb,as,nitrate and nitrite was low,but chromium was relatively higher.no aflatoxin b 1 and pathogenic bacteria were detected.the residual hydrogen peroxide were detected from15out of the18samples detected.

结果 菌种毒力试验和急性毒性试验（ld 50 ）显示为无毒物；多数企业未建立卫生管理制度，卫生设施不完善；采集54份椰果样品做卫生学检测，铅、砷等重金属元素、硝酸盐、亚硝酸盐污染水平较低，铬含量相对较高，未发现黄曲霉毒素b 1 和致病菌的污染；18份椰果样品中有15份残留过氧化氢。

Results Toxic test and LD50 test showed that Nata de coco strain was free from toxin. Quality control system has not been established and sanitary facilities were incomplete in most factories. Totally 54 samples of Nata de coco were hygienically deten＇nined.

结果菌种毒力试验和急性毒性试验（LD50）显示为无毒物；多数企业未建立卫生管理制度，卫生设施不完善；采集54份椰果样品做卫生学检测，铅、砷等重金属元素、硝酸盐、亚硝酸盐污染水平较低，铬含量相对较高。

Selected some of the more representative test of the identification code to do the test,.

选取了一些比较有代表性的验证码做了识别的试验，介绍了添加纹理的验证码去除纹理的方法，根据试验的结果，论证了现有验证码不能很有效的保证系统的安全。

The operation had been preceded by many years of clinical and laboratory research and work on animal models.

手术前研究人员已经开展了多年的临床试验，并已在动物模型上做过试验。

ABSTRACT: A trial was carried out to study the effect of yeast culture on performance of lactating sows. The results indicate that yeast culture is able to increase the number of live littermate, weight of weaning pigs, rate of survival pigs during lactation etc. Furthermore, the results of this trial is to some extent similar to those of experiments carried out before.

本文通过应用酵母培养物饲料添加剂饲喂哺乳母猪的试验研究，发现酵母培养物能够改善母猪窝产活仔数、仔猪断奶重、哺乳期间仔猪成活率等生产性能，并同时与前人的研究报告做了对比，其试验结果具有相似之处。

The team, led by Eric Kremer of the University of Montpellier in France, examined why people participating in the STEP vaccine trial who had previously been exposed to a cold virus, adenovirus 5, seemed more likely to become infected with HIV-1 than those who hadn't been exposed to the virus (see ' HIV vaccine may raise risk ').

法国的蒙特利尔大学里的EK和他的带领的团队做了这样的一个"分步疫苗试验"的研究，试验为什么那些曾经暴露于被冷冻腺病毒5的受试者比那些从未没有接触过这些病毒的人更加容易感染艾滋病病毒。（见文章《人类免疫缺陷病毒疫苗有可能引发灾难》）。

Polyalcohol,preservative,metal ion and carbohydrate were experimented through single-factor tests,potassium sorbate,Na~+、K~+、Ca~(2+)、sucrose and lactose had great effects on the stability of mannanase M0710.Orthogonal experiments decided the optimal stabilizing agent were potassium sorbate 3%,sodium chloride 2%and sucrose 2%.

对突变酶M0710的稳定剂也做了初步研究，单一因素试验考察了多元醇类化合物、防腐剂、金属离子和糖类化合物等对目的酶稳定性的影响，其中山梨酸钾、Na~+、K~+、Ca~(2+)、蔗糖、乳糖对酶的稳定性有明显效果，通过正交试验最后确定效果最佳的液态酶M0710的稳定剂为山梨酸钟3%、氯化钠2%和蔗糖2%。

I made many preparatory experiments in secret, and have been satisfied with them.

我悄悄地做了几次试验，试验的结果，我十分满意。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。