因此，钻进效率低，回次进尺短，孔斜不易控制。
通过新型PD C钻头推广应用，单口井所需钻头数量减少3 ~4只，减少起下钻3回次以上，缩短钻井周期3 5天。
In the application of new type of PDC bits, the number of bits used for a single well was reduced 3 ~ 4, well-completing period was shortened 3 53 days.
我每隔一周回一次家。
我遭受过一回精神崩溃，那是一次痛苦的经历。
I suffered a nervous breakdown. It was a traumatic experience.
我父母很少回老家，他们十年回一次。
My parents seldom go to their hometown. They go there once ten years.
再一次地，有一只老虎在油箱里很好，但是有一只老虎在驾驶席上就完全是另一回事了。
It is very well, again, to have a tiger in the tank, but to have one in the driver's seat is another matter altogether.
有些乐曲可能长达40分钟，需要多达50次翻页，其中包括为演奏重复乐章时的回翻。
Some pieces of music can go for 40 minutes and require up to 50 page turns, including back turns for repeat passages.
但是如果我碰巧看到一次，我就再也回不了家了。
一次，父亲的来信我回晚了，他把我责备了一顿：这一通信渠道很快就要关闭了，你将只能在记忆中会议这里的一切。
Once when I was late replying to a letter from my father he chided me: This account will be closed soon, and then you will have only memories - ashes of thoughts.
他建议一周回忆噩梦一两次- - -而且仅仅是在把它改成新梦境时。
He suggests recalling a nightmare only once or twice a week - and only when changing it into a new dream.
虽然接受回调函数的函数功能十分强大，但是没有一种好方法可以执行一次性回调函数，而无需执行一些非常笨拙的工作。
Although the functions that accept callback functions are powerful, there isn't a good way to do a one-off callback function without some very inelegant work.
用户提交搜索时，会动态添加一个脚本标记到页面并指定回调函数的名称，从而进行一次API调用。
When the user submits a search, an API call is made by dynamically adding a script tag to the page and specifying the name of a callback function.
据行星学家罗宾·卡纳普说，冥王星的所有三个卫星可以追溯回同一次撞击。
According to planetary scientist Robin Canup, all three of Pluto's satellites could trace back to a single impact.
您将看到下面的单元级名称绑定回显，但这一次，它是corba类型的。
You will see the following cell level naming binding echo — but this time, it is a CORBA type.
在第二次扫描中，额中回和额下回也被激活——这些部分与形成(短期)记忆和做出决定有关联。
But in the second scan, the middle frontal gyrus and inferior frontal gyrus were also lit up - the parts associated with working (short-term) memory and decision-making.
我去监狱里探望过他三回——我十岁生日一次，老爸五十岁生日一次，还有妈妈过世的时候。
I'd visited him three times — on my tenth birthday, on his fiftieth, and when Ma died.
不过，去年大宗商品价格近40%的回落，应被视为大宗商品长期牛市一次健康的回调。
Last year's near 40 per cent pullback in commodities, though, should be viewed as a healthy correction in a secular commodity bull market.
有一次，在回自己的房间之前，玛塔在爱德华的脸颊上轻轻地吻了一下。
Once, Marta had kissed Edward on the cheek before retiring to her room.
这两次周期中回调的规模，都与去年的跌幅类似。
Both mid cycle corrections were similar in size to last year's weakness.
今晚开始女孩子们要回去自己的卧室睡觉了，这也是她们的妈妈离开后，她们第一次回自己的卧室睡觉。
Tonight, for the first time since their mother left, the girls were going to sleep in their own beds.
他每年回一次南方。
最后，我回旅馆发现四天夜里第一次没有空瓶香槟放在邻居门口。
At length, I return to the hotel to find, for the first time in four nights, no empty champagne bottles outside my neighbors’ door.
这次活动包括37次正式会议，“循回”海报招贴会议，以及乘坐水上摩托艇和悬挂式滑翔机等社交活动。
Activities ranged from 37 formal sessions to "walk around" poster sessions to social events with jet skis and hang gliders.
我看过一次：主人公在第三回里死了，第四回里又活了过来。
I examined it once upon a time: the hero dies in the third chapter, while in the fourth he is alive.
在一次回大学的路上一对衣衫褴褛的夫妇拦住了我。
Once, an old man in tatters and his sick wife stopped me on the way back to the university.
她们每年放一次假回村里探亲，有闲钱就带点东西回去，其他时间都花在工作上。
Once a year, they go for a holiday visit to their country village, bearing gifts if they can. The rest of the time is spent on the job.
她们每年放一次假回村里探亲，有闲钱就带点东西回去，其他时间都花在工作上。
Once a year, they go for a holiday visit to their country village, bearing gifts if they can. The rest of the time is spent on the job.
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