2) factoring big integer problem
大数难解问题
1.
A knap sack public-key cryptosystem based on factoring big integer problem;
一种基于大数难解问题的背包公钥密码体制
3) Congress on Older Persons
老年人问题大会
4) Difficult problem
疑难问题
1.
Study on Difficult Problems in Government Information Publicity Litigation——Empirical Study on Administrative Litigations in Zhejiang Court
政府信息公开行政诉讼案件疑难问题研究——以浙江法院审理的行政案件为实证样本
2.
When the medium is of v(z)= v 0(1+βz) , the computational results disagree with argument that 3 D migration offset can be split into two components pointing respectively in x direction and vertical direction, and they are just the 2 D migration offset in these two directions, therefore producing an difficult problem for mapping with 2 D migration section.
利用单斜构造摸型对T0 空校作图方法的正偏移和反偏移进行计算 ,结果表明“三维空间偏移量可以分解为测线x方向上和垂直于x方向的 2个分量 ,它们恰好是沿着这 2个方向上的二维偏移量”的结论对v(z) =v0 (1+βz)时的连续介质而言是不成立的 ,从而使有关的叠偏剖面作图方法在原理上出现了疑难问题。
5) difficulties
[英]['difikəlti] [美]['dɪfə,kʌltɪ]
难点问题
1.
Objective To explore the difficulties and countermeasures in the morning shifting report in English.
目的探讨护士英语交班中存在的难点问题及应对措施。
6) NP-hard problem
NP-难问题
补充资料：老大
①〈书〉年老：少壮不努力，～徒伤悲。②排行第一的人。③〈方〉木船上主要的船夫，也泛指船夫。④很；非常（多见于早期白话）：心中～不忍。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条