D. My vessel has not been trimmed properly.
我有危险的倾斜意思是我船已经倾斜。
Used properly, sunscreens with an SPF of 8 or higher completely block UVB radiation and prevent synthesis of vitamin d.
使用得当的防晒系数为8或更高的防晒霜在完全阻挡紫外线辐射的同时也阻止了维生素d的合成。
It is required to detail understand the structure of the hangers, master the down-hole situations, and properly analyze, verify and handle different issues happened d...
这要求对悬挂器本身结构详细地了解、对井下情况的掌握,并要求对发生在现场使用过程中的各种情况进行准确分析、判断与处理等。
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