To ensure safety in blasting operation, the project department purchased interphone and blast shelter; concerning such actual situations as bad signal of mobile phone and unwarrantable contact, wireless telephones were installed as a supplementary means of contact respectively in periods of mining preparation and cracking; posters of safety warning were added, so as to ensure safety through improving hardware facilities.

項(xiàng)目部購置了對講機(jī)日韩欧美国产一卡、避炮棚成年免费人人操，保證爆破作業(yè)安全，針對手機(jī)信號不好聯(lián)系不能保證的實(shí)際情況在采準(zhǔn)开操网、破碎分別安裝了無線電話做為補(bǔ)充聯(lián)系手段精品日韩妖精视频网站，增加了安全警示標(biāo)語，通過完善硬件設(shè)施保證安全日韩精品国内直播在线观看视频免费。

This method is not feasible, because that is a contact mine, simultaneously also does not have the time to make sea mine's blasting cap.

這種方法也不可行成年人网站播放，因?yàn)槟鞘且幻队|發(fā)水雷，同時(shí)也沒有時(shí)間去弄掉水雷的雷管特级肏屄视频。

angle of contact：(彎液面) 接觸角

ANFO blasting agent 硝酸銨油渣混合炸藥 | angle of contact (彎液面) 接觸角 | angle of dilatancy 剪脹角,擴(kuò)容角