2) double-emission and double-receiving
双发双收
1.
Realizing double-emission and double-receiving from single-emi. and double-rec. to conduct compensation sound wave logging;
利用单发双收实现双发双收进行补偿声波测井
3) Double transceiver technique
双发双收法
4) bilateral fermentation
双边发酵
5) single-emission and double-receiving
单发双收
1.
Based on refraction p-wave, and the concept of single-emission and double-receiving, forward modeling was used to obtain the acoustic travel time.
采用折射纵波单发双收的原理,数值正演模拟得到了声波时差值;利用小波变换计算了地层位置、厚度和速度。
2.
Based on exchange principle, by using self-developed software,the compensation sound wave logging can be realized with the results from single-emission and double-receiving logging equipment the same as that from double-emission and double-receiving.
对老式的单发双收煤田测井仪，利用互换原理，通过自行开发编制的软件，以实现与双发双收效果相同，结果一致的补偿声波测井，并通过几个孔的资料对比，达到满意效果。
6) fermentation by two starters
双曲发酵
补充资料：“海盗“双发双座亚音速低空攻击机
Image:11727525629328069.jpg
“海盗“双发双座亚音速低空攻击机
“海盗”攻击机安装两台罗.罗公司的rb.168—1a“斯贝”101型涡轮风扇喷气发动机，进气口呈竖椭圆形。在尾喷口之后的机身尾锥，是一个蛤壳状开闭的减速板，上方是t形尾翼。其垂直尾翼前方有一根背脊与气泡双座座舱盖连成一线。机头是雷达罩锥体和一个空中加油杆。机身内部有一个放置式弹舱，可携带4颗454千克炸弹，两侧的后掠梯形中单翼下面，另有4个挂架，可挂炸弹、火箭、导弹或副油箱。
“海盗”有三大改型：“海盗”s.mk. ⅰ 舰载攻击机，“海盗” s.mk. ⅱ （ⅱa、ⅱb）、“海盗”s.mk. 50 出口南非的陆基型攻击机。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。