... submarine geology 海底地质学 submarine blasting 水下爆破 submarine canyon 海底峡谷,海谷...
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submarine blasting gelatin 水下用硝甘炸药
Blasting under water is difficult, submarine blasting is more difficult because of water flow.
水下爆破难度较大,在流动的海水中爆破难度更大。
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