非有效的

It can effectively prevent cracking,by analyzing the chemical and mechanical pefformanee of this clad plate,carrying on the non-standard highest hardness test,metallographic analysis and simulation welding test,and using 890 ℃×4 h preweht air-cool heat treatment,postweld 250 ℃×2 h hydrogen removal heat treatment and final 620

通过分析该复合管板的化学成分和机械性能，并进行了非标准的最高硬度试验、金相分析和模拟试焊，采用890℃×4h焊前空冷热处理、焊后250℃×2h消氧热处理以及最终620℃×4h退火热处理措施，可有效防止裂纹产生。

The theory analysis and simulation results demonstrate that, to the non-correlation signal, MUSIC algorithm is also an effective method for the measure of target direction angle.

理论分析和仿真结果表明，对非相关或相干信号，MUSIC算法是一种有效的测量目标方位角的方法。

Fault location in a neutral ineffectively grounded system when a single-phase-to-earth fault happened is a problem unsolved in the world.

中性点非有效接地系统中的线路单相接地故障定位是一个至今在国内外还没有很好解决的难题。

The elastic wave test is an effective method for the nondestructive evaluation of concrete structures.

弹性波法是用来评估混凝土品质的一种相当有效的非破坏检测法。

According to the analysis of real pitch errors within the mechanical angle of 0°~360°, the reason that caused the bouncing pitch errors between odd sampling and even sampling is the noneffective voltage of inductosyn angular measuring system.

根据实际测量得到测角系统在0°~360°之间全部零位误差数据，分析测角系统产生奇、偶点跳跃零位误差的原因来自于感应同步器测角系统引入的非有效电势。

SEVIS currently lists more than 1,000,000 active, nonimmigrant students and exchange visitors and their dependents.

目前，SEVIS在册了100多万名有效的非移民学生、交换学者以及他们的家属。

They are all effective, nonmedical ways of dealing with anxiety.

这些都是有效的应对焦虑的非医学方法。

The argument in such syllogisms is valid by virtue of the fact that it would not be possible to assert the premises and to deny the conclusion without contradicting oneself.

在这样一个三段论中，推理是有效的，结论成立。因此，考生应非产清楚，一个三段论中有两个前提，一个结论，用公式表示为

Objective To explore noninvasive and effective method to detect Helicobacter pylori in saliva.

目的 探讨一种有效的非侵入性幽门螺杆菌诊断方法。

This report aims to bring up with some effective ability-cultivating ways for Business English students in order to self-learn the foreign language knowledge and skills at non-teaching environment.

此论文旨在提出一些有效的学习能力培养方式，使商务英语学生能够在非教学环境中，自主学习外语知识和技能。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。