探矿

Based on analysis and improvement of some driving methods of raise shaft in medium and small mines,this paper introduces two development methods suitable to raising in medium and small mines.

天井、溜井是矿山基建、采准、切割和生产探矿的重要工程，它在矿山井巷掘进中占很大的比重，同时也起着十分重要的作用。

The boring boy bored as hore for ore core at the sco re.

讨厌的男孩在海岸上的刻线处钻探矿核。

The prospector panned off bits of a sand and gravel scoop ed from the bed of a stream.

探矿者淘选从河床里挖出的少量含金泥沙和砂砾。

Concrete transport pump, asphalt paver, vibratory roller, road roller, piling machine, tunnel drilling robots, large concrete mixer, urban multi-level parking lot and anti-sandstorm, high frigid-resistant, large hoisting, mine-probing, rock-drilling, deep-digging, deep-laying equipments and their accessory products.

混凝土输送泵、摊铺机、压路机、压桩机、隧道凿岩机器人、大型混凝土搅拌机、城市立体停车库以及抗风沙、耐高寒、大吨位的起重、探矿、凿岩、深挖、深埋设备及配套产品。

In the most complex placer mining, groups of prospectors would divert the water from an entire river into a sluice alongside the river, and then dig for gold in the newly exposed river bottom.

70最为复杂的砂金开采方式是由探矿人员将河流中的水引进河边的一个水闸，然后从刚刚暴露出的河底部分发掘黄金。

After diluting to a definite volume, aliquots of the extracts are taken, and determinations are made by extraction of the molybdenum-thiocyanate complex with ether in the presence of stannous chloride and then by visua...

苏联及北欧国家的地鬓学者过去在地球化学探矿工作中普通使用光帮半定量方法。美国、英国和加拿大则主要使用化学方法此

The farmer out his claim to all the land before the prospectors came, but it was in vain.

这位农场主在探矿者到来之前立桩标明他对所有这些土地的所有权，但这是徒劳。

They found interesting relationships between size of business and strategy such that prospectors were more likely to be smaller and younger businesses.

他们发现，企业之间的规模和战略有趣的关系，这样探矿更有可能体积更小，小企业。

The news spread quickly, and by late 1898 more than 30,000 prospectors had arrive d.

消息传得很快，1898年末就有三万多名探矿者蜂拥而至。。

The news spread quickly, and by late 1898 more than 30,000 prospectors had arrived.

消息传得很快，1898年末就有三万多名探矿者蜂拥而至。。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。