低下

She came from a mad family, weak-minded and violent.

她出身于一个疯子家庭，智力低下，性格暴躁。

The process of finite element computing has to be repeated as many times as the number of samples in random response analysis of structure. Usually, the number of samples is very large even by adopting weightily sample technique, so the computing efficiency is slow.

结构的随机响应分析由于涉及到大量的样本，而使得有限元计算过程大量重复，尽管通过正交设计可减少分析样本数目，效率仍十分低下。

Werner:This is a high fall. You should lower yourself down to be safe.

这个垮台很高，为了安全起见，你必须先低下身子。

"But do let her go, Jacky," coaxed his poor witless wife.

"可是你非叫她去不可，捷奇，"他那位头脑简单，智力低下的太太甜言蜜语地说。

"As Canada's largest provider of voice and data communications services, Rogers Wireless is pleased to offer customers yet another time-saving productivity weapon in the war against inefficiency," said Irv Witte, Vice President, Business Marketing, Rogers Wireless.

"作为加拿大最大的语音和数据通信服务， Rogers Wireless公司很高兴为客户提供的又一个节省时间的生产力武器在战争中对效率低下，说："通气维特，副总裁，企业营销， Rogers Wireless等。

Automata has been applied to almost all the procedures in newspaper industry, however, designing page layout is still in the mode of manual work and relying on the idea of human editors, and the efficiency is so low.

新闻报业几乎已经在所有流程环节采用了计算机技术，但在版面设计时仍然大量地依赖于版面编辑的思维劳动和手工作业，效率低下。

Albicans infection.Methods We observedarately adoptively immunized with T lymphocyte or antibody or phagocyte.

分别观察过继免疫T 淋巴细胞、抗体和吞噬细胞的免疫功能低下小鼠抵抗腹腔白念珠菌感染情况。

For the profound hearing loss ears with absent ASNR, about two thirds were considered as saccular afunction because of absent VEMP.

在非ASNR组中，三分之二没有引出VEMP，而另外三分之一虽然可以诱发出VEMP，但阈值明显较正常对照组高（P〈0.01），分别提示球囊功能丧失或低下。

After a further analysis based on the empirical results,a trial probe on the cognitiveprocessing mechanism of the problem representation of the word problem in two types of MLDwas made by the author.The MRD performed much poorer than the MLD only in the mostdifficult equation listing of word problem and the medium and most difficult problemrepresentation of word problem,which showed no difference in computation and comprehensionof simple meaning of the problem,but the gap between two types of MLD became wide as afunction of difficulty and cognitive loading.It indicated that the MLD only had some advantage over MRD for they used more cognitive skills to solve the problem.

基于以上实验的结果，对两类数学困难小学生的应用题问题表征的认知机制作如下推断：混合型数学困难学生仅在高难度水平的应用题列式成绩和中高难度水平应用题问题表征水平上比单纯型数学困难学生得分显著低下，表明两类数学困难小学生在计算能力与理解简单题意的能力上并无差异，但随着难度提高，认知负荷加重，两类数学困难学生在应用题解题上的差异得以突显，表明当需要运用更多的认知能力解决问题时，单纯型数学困难学生比混合型困难学生更具优势。

For the profound hearing loss ears with absent asnr, about two thirds were considered as saccular afunction because of absent vemp. the other one third displayed vemps with higher thresholds than normal control (p 0.01) indicating saccular hypofunction.

在非asnr组中，三分之二没有引出vemp，而另外三分之一虽然可以诱发出vemp，但阈值明显较正常对照组高（p 0.01），分别提示球囊功能丧失或低下。

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。