两次

You have also known , I have been setting about handling this piece of thing right away , have doddered along , come over for 1 year from the last year, old the appearance hoping seem to fail to see , two time of visa failure can not speak to my strike not fighting.

你也知道的，从去年我就一直在着手办这件事情，跌跌撞撞的，一年过来了，老好像看不到希望的样子，两次的签证失败对我的打击不能说不打。

I rang the doorbell twice but got no answer,so I went back.

我按了两次门铃，但没有回答，所以我就回去了。

A double dose of the vaccine is supposed to be 88 to 95 percent effective.

两次疫苗的剂量就可以有88％－95％的防治效果。

In this case the automated single check would not be as good as the manual double check.

在这种情况下，自动的信号检查没有两次手工检查好。

In the double exposure hologram recording process, the sub-surface material placed before the mirrors for micro-wave displacement, then the mirror reflection of the reference beam ...

在两次 曝光全息图的记录过程中，置于物面的分波前反射镜作微位移，则该反射镜反射的参考光。。。

The spectrum of fiber Bragg grating can be controlled by double exposure technique. The first exposure is used to control the resonant wavelength of fiber grating by directly irradiating the naked photosensitive fiber.

该方法只使用普通Bragg位相模板，采用两次曝光技术，通过控制光纤光栅的本地谐振波长和反射率，达到控制光纤光栅谱形的目的。

The double negative is negative twice, it means that a positive meaning.

双重否定就是否定两次，即表示肯定的意思。

But Rodriguez, who already had struck out twice, grounded into a double play.

但是之前已经被三振两次的A-ROD击出了双杀打。

AZT-GalCer was prepared by double emulsion and its encapsulation ratio were up to 72.5%.

采用两次乳化法制备了AZT-GalCer，其包封率达72.5％。

At time point of fixation 60 days space between double tetracycline labeling can't be observed and LS declined to the lowest.

固定60天四环素双标未能观察到两次标记的间隔，荧光标记表面降到最低。

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。