查询词典 difficult point

During practical process operation, it is often difficult to implement optimal control, since operating pinch point and the minimum temperature difference deviate from the design values.

在实际的生产中，换热网络的操作夹点和最小温差与设计值往往不尽相同，为换热网络的优化控制带来了一定困难。

The wellbore trajectory control is the key and difficult point in slim hole cluster drilling technology.

井眼轨迹控制是小井眼丛式钻井技术的重点和难点，文中探讨了钻具组合、上部井眼曲率、钻井参数以及钻头选型对小井眼轨迹控制的影响，并建立了相应的井眼轨迹控制模式。

This is the difficult point of the paper but also the innovation of the paper.

这是本文的难点，也是本文的创新之处。

Less than 5% of the total water retained in WASRNF is non-freezing water which is equivalent to water which is inferior to permanent wilting point of soil, and difficult for plant use.

保水缓释氮肥的结合水占5％以下，其相当于土壤吸湿水，是植物难利用水。

Margin is a double-edged sword in the short term in favor of A-share market strength, and from the long-term point of view, the market plunge up the situation will be difficult to re-emerge in the market at a relatively high level, it will prevent market bubble Too large.

保证金是一把双刃剑，在短期内剑在A股市场实力的青睐，并从长远来看，建立市场暴跌的情况将很难再出现在市场上一较高水平，将防止市场泡沫过大。

First of all, the structure from the message, the message is divided into 3 parts: the first message, at the style, MAC address, so that packet transmission to reach the safety of the international financial sector standards; Secondly, the encryption method from the point of view, this The most prominent of the two systems were encrypted administrator password is encrypted on the card to encrypt passwords, especially for card encryption, the use of soft encryption service interface technology, using the work key, master key, the original password through the ciphertext key algorithm through two different DES encryption key to come up, we can imagine, I want to work at the same time key, master key, the text of the original secret password to a more difficult task, If the re-solution of the two DES, can be said to be completely impossible!

首先从报文结构上来看，报文分为3部分：报文头、报文体、MAC地址，使报文传输的安全性达到了国际金融行业的标准；其次，从加密方式来看，本次系统最突出的两个加密分别是对管理员密码进行加密、对卡密码进行加密，特别是对卡密码的加密，运用的是软加密服务接口技术，运用工作密钥，主密钥，原始密码通过算法得到密钥密文通过两次不同的DES加密才得出的密钥，可想而知，想要同时得到我的工作密钥，主密钥，原始密码密文本来就比较困难了，要是再解两次DES，可以说是完全不可能实现的！

Corn hybrid variety identification hasalways been a difficult point of seed testing in china,it has important practicalsignificance to study and spread fast corn variety identification for country andenterprises.

而玉米杂交种纯度鉴定是我国种子检验工作的一个难点，研究和推广快速玉米种子纯度检测技术，对国家和企业具有极其重要的现实意义。

Such counter twisting has been found difficult in tests, especially if two-point suspension parachutes are used.

但在测试中证明这样的右翻滚是很难做出的，尤其是在使用两点悬挂式的降落伞时。

The model of gear profile curve and gear transition curve are the difficult but key point of gear 3D solid model.

齿廓曲线尤其是齿根过渡曲线的构建是渐开线圆柱齿轮三维实体建模的难点，也是其关键问题。

It is relatively difficult to calculate the coordinates of an arbitrary point of an incomplete transition curve at the interchange ramp on highway.

在高速公路互通立交匝道线形设计中，非完整缓和曲线上任意一点坐标计算较为困难，通过公式推导，提出一种简易适用的计算方法，其在工程中的应用具有一定的指导作

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。