The letter "x" often represents an unknown number in some Math exercises.
在一些数学练习中，字母“x”通常代表一个未知数。
The sign X denotes an unknown number.
符号表示一个未知数。
The sign X stands for an unknown number.
在代数中，符号x通常代表一未知数。
In math, X is used to stand for an unknown number.
在数学中，X被用来代表一个未知数。
The unknown number can be calculated from the data.
通过已知数可以算出未知数。
Write out the equality that contains unknown number.
列出含有未知数的等式。
An unknown number drowned in the floodwaters or died later of injuries.
被洪水淹死及受伤后死去的宠物数量至今还不清楚。
They have an unknown number of binary digits, which you cannot control.
他们有数目不详的二进制数字，你无法控制。
If you want to get the unknown number, you should know the known number first.
如果要想求出未知数，你首先得知道已知数。
Haiti has been struck by a 7.0 earthquake, killing an unknown number of people.
海地今晨发生7.0级大地震，目前死亡人数尚无统计。
A couple of hours after I left the comment, I got a text message from an unknown number.
我评价过后几个小时，收到了一个陌生号码的信息。
Haiti has been struck by a 7.0 magnitude earthquake, killing an unknown number of people.
海地今晨发生7.0级大地震，目前死亡人数尚无统计。
Officials say an unknown number of militants in hostages were killed in the ensuing gun battle.
官员表示人质群里数量不明的武装分子在随后的枪战中丧生。
The toll climbed to as many as 155 dead, with more than 500 wounded and an unknown number still missing.
遇难人数已上升到155人，500多人受伤，还有人数不详的失踪者。
An unknown number of development processes that bridge known but uncontrolled processes are unidentified.
那些在已知的但未经控制的过程之间尚有未知数量的开发过程未被确认。
Real estate bubble is the legacy left to Hainan huge and unknown number of financial non-performing assets.
房地产泡沫留下的遗产是巨大的和海南数目不详的金融不良资产。
The GWM model for splice signals is a mixture of weight matrix models (WMM) with unknown number of components.
分组权重矩阵是一个子总体数未知的混合权重矩阵模型。
Fig4. Do send important stuff in your own company to avoid being processed as junk faxes with unknown number by some blue chips.
重要的传真请在自己公司发送，要知道大公司在接收时往往很在意传真头上的发送号码的，小心被当广告传真处理。
An Infantino spokesman said 10, 000 of the recalled slings had been sold to the UK market, although an unknown number could still be in stores.
Infantino的一位发言人说，从英国市场召回的背巾已有一万条，不过可能还有部分背巾作为库存并未售出，数量尚不明确。
An Infantino spokesman said 10,000 of the recalled slings had been sold to the UK market, although an unknown number could still be in stores.
Infantino的一位发言人说，从英国市场召回的背巾已有一万条，不过可能还有部分背巾作为库存并未售出，数量尚不明确。
Finally, simulation proves the capacity to perform the blind source separation with an unknown number of sources and the convergent stability of the new algorithm.
新算法具有与自然梯度算法相同的收敛速度，而且克服了已有算法不能稳定收敛的缺点。仿真验证了新算法的分离性能和收敛稳定性。
However, it begins to break down in scenarios that involve complex conversation threads and distributed conversation scenarios (feeds from an unknown number of content publishers).
然而，在有些场景则不适用，比如涉及复杂对话线程和分布式对话的场景(来自内容发布者未知成员的提要(feed))。
That may be difficult to realize, however, because an unknown number of doses is already tied up through contracts between pharmaceutical companies and countries that can afford them.
不过，因为不知多少疫苗已经被买得起的国家和制药厂签订采购合同预订了，这些计划实现起来也许有些困难。
As Tzu Chi volunteers lead a mass prayer, everyone puts their palms together to pray for safety and wellbeing not only for themselves, but also for the unknown number of victims out there.
慈济志工带著灾民一起祈祷，每个人双手合十，不只是为自己，也是为其他受苦受难的人民祈祷平安。
As Tzu Chi volunteers lead a mass prayer, everyone puts their palms together to pray for safety and wellbeing not only for themselves, but also for the unknown number of victims out there.
慈济志工带著灾民一起祈祷，每个人双手合十，不只是为自己，也是为其他受苦受难的人民祈祷平安。
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