查询词典 polarity

A similar line of reasoning – plucking the string moves it in a given direction, which gives such-and-such a signal polarity, which leads to whatever movement of the cone in the guitar amp speaker cabinet – breaks down at every point in the chain.

相似的道理—弹琴弦的时候产生了一个反向信号，让在吉他放大器扬声器箱体里的音盆动起来了----在链的每个点上又被分散了。

The regression equations could be used to estimate the BCF of the benzene derivatives in grass crap , and the results were not affected by the polarity of stationary phases.

统计检验表明，两类估算方程在不同固定相上的平均相关系数分别为0·952和0·965，均呈极显著相关(P·01)，可用于估算取代苯类化合物在草鱼体内的BCF，估算结果不受固定相极性的影响。

To estimate the bioconcentration factor of benzene derivatives in fish by gas chromatography retention time, this paper measured the BCF of chlorobenzene, o-chloro-toluene, p-dichlorobenzene, m-dichlorobenzene, 1,2-dichlorobenzene, nitrobenzene, p-chloro-aniline, p-chloro-nitrobenzene, and 4-chlorodiphenyl in grass crap, and the t_R of test derivatives on the stationary phases of six kinds polarity.

为了用气相色谱保留时间估算取代苯类化合物在鱼体内的生物富集系数，测定了草鱼对氯苯、邻氯甲苯、对二氯苯、间二氯苯、邻二氯苯、硝基苯、对氯苯胺、对硝基氯苯、4-氯联苯9种取代苯类化合物的BCF和不同取代苯化合物在6种不同极性固定相上的tR，建立了tR与BCF的一元回归方程及tR一阶分子连接性指数(1XV)与BCF的二元回归估算方程。

Then he designed a segmented conductor that supplied current to the wheel mounted electromagnet, and the sections reversed the current at the right time to cause the polarity to reverse automatically, and caused the wheel not only to complete one revolution, but also to rotate continuously.

然后，他设计了一个分割导体的电流供应的车轮安装电磁铁，以及部分扭转目前在合适的时间造成的极性自动扭转，并造成车轮不仅要完成一个革命，而且还不断地旋转。

A New type of benzoxzine precursors was systhesized based on methoxy methylene diphenyl ether oligomer.The struture of product was characterized by IR and H-NMR analysis and effects of solvent polarity,temperature on the precursor composition were investigated.

以甲氧基次甲基二苯醚低聚物为基础合成了苯并口恶嗪预聚物，用H－NMR、IR表征了该预聚物的结构，讨论了反应温度、溶剂的极性等因素对合成预聚物的结构和组成的影响。

The varieties of amplitudes、polarity and spectrums of experimental signals are in good agreement with simulations.

实验中表面波信号幅度、极性和频谱的变化与理论计算的结果基本相符。

Antonyms of this kind are characteristic of semantic polarity.

这种反义词的特点是语义二极性。

Is used to measure DC voltage or DC carnet , we must be careful that the polarity is not reversed.

假如用万用表测量直流电压或直流电流，我们必须注意极性不可接反。

If the multimeter is used to measure DC voltage or DC carnet , we must be careful that the polarity is not reversed.

假如用万用表测量直流电压或直流电流，我们必须注意极性不可接反。

Or'.''''.'DC'.'' carnet , we must be careful that the polarity is not reversed.

或'。''直流电流，我们必须注意极性不可接反。

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。