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- The coal briquette penetrability is important in researching the rule of protected stratum penetrability changes during the period of protecting stratum mining. 型煤的渗透性对研究保护层开采过程被保护层的透气性变化规律有重要作用,为此设计了型煤渗透性测试系统。
- In situ measurements verify the above by observing the confined water intruding up into the coal floor,the protective strata,before mining.This paper considers the secondary stress as the conditi... 底板的原位应力测试发现承压水在采前出现了向上入侵的现象,二次应力给导升的发展提供了条件,递进导升是突水机理之一。
- A mother naturally feels protective towards her children. 母亲对自己的孩子自然会悉心保护。
- They netted the fruit trees to protect them from birds. 他们用网覆盖住果树以使其免遭鸟害。
- extreme short-range protective strata 超近保护层
- They represent each society stratum. 他们代表各个社会阶层。
- How can we protect our computer files? 我们怎样才能保护我们的计算机数据?
- A protective covering of bony plates or scales. 护身甲壳保护骨盘或介壳的覆盖层
- He put his arm round her in a protective gesture. 他用一只手臂围住她做出保护的姿势。
- They do not constitute a separate class or stratum. 知识分子和青年学生并不是一个阶级或阶层。
- A plastic cover protect the computer. 这台计算机由一个塑料防护罩盖着。
- It's our duty to protect the saplings. 保护树苗是我们的责任。
- A decorative or protective covering or cover. 罩子一个装饰性或保护性的罩或盖
- He hates the privileged stratum. 他憎恨特权阶层。
- Prevention of or protective treatment for disease. 预防对疾病的防止或保护性处理
- A light and its protective or decorative case. 灯罩灯以及它的保护性或装饰性外套
- This is a stratum we must win over. 这一阶层,我们是必须争取的。
- A protective covering for the knee. 护膝用于保护膝盖的覆盖物
- Tramps are from the lowest stratum of society. 流浪汉来自社会最下层。
- In case of flood, the dam can protect us. 在发洪水的时候,大堤可以保护我们。